diff --git a/internal/style/fallback/style.go b/internal/style/fallback/style.go
index 0b5625b..caab9f7 100644
--- a/internal/style/fallback/style.go
+++ b/internal/style/fallback/style.go
@@ -3,7 +3,6 @@ package fallbackStyle
 import "image/color"
 import "git.tebibyte.media/tomo/tomo"
 import "golang.org/x/image/font/basicfont"
-import "git.tebibyte.media/tomo/nasin/internal/style"
 
 var colorFocus                 = color.RGBA { R:  61, G: 128, B: 143, A: 255 }
 var colorInput                 = color.RGBA { R: 208, G: 203, B: 150, A: 255 }
@@ -39,520 +38,456 @@ var borderColorInput    = [4]color.Color { colorInputShadow, colorInput,     col
 var borderColorFocused  = [4]color.Color { colorFocus,       colorFocus,     colorFocus,     colorFocus       }
 var borderColorShade    = [4]color.Color { colorShade,       colorShade,     colorShade,     colorShade       }
 
-var rules = []style.Rule {
-	// *.*[*]
-	style.Rule {
-		Default: style.AS (
-			style.AttrFace      { Face:  basicfont.Face7x13    },
-			style.AttrTextColor { Color: tomo.ColorForeground  },
-			style.AttrDotColor  { Color: tomo.ColorAccent      },
-			style.AttrGap       { X: 8, Y: 8                   },
-		),
-	},
+var rules = []tomo.Rule {
+	// *.*
+	tomo.Ru(tomo.AS (
+		tomo.AFace      (basicfont.Face7x13  ),
+		tomo.ATextColor (tomo.ColorForeground),
+		tomo.ADotColor  (tomo.ColorAccent    ),
+		tomo.AGap       (8, 8                ),
+	), tomo.R("", "")),
 
-	// *.Button[*]
-	style.Rule {
-		Role: tomo.R("", "Button", ""),
-		Default: style.AS (
-			style.AttrBorder {
-				outline,
-				tomo.Border {
-					Width: tomo.I(1),
-					Color: borderColorLifted,
-				},
+	// *.Button
+	tomo.Ru(tomo.AS (
+		tomo.AttrBorder {
+			outline,
+			tomo.Border {
+				Width: tomo.I(1),
+				Color: borderColorLifted,
 			},
-			style.AttrPadding(tomo.I(4, 8)),
-			style.AttrColor { Color: tomo.ColorRaised },
-		),
-		Pressed: style.AS (
-			style.AttrBorder {
-				outline,
-				tomo.Border {
-					Width: tomo.I(1, 0, 0, 1),
-					Color: borderColorEngraved,
-				},
-			},
-			style.AttrPadding(tomo.I(5, 8, 4, 9)),
-			style.AttrColor { Color: colorCarvedPressed },
-		),
-		Focused: style.AS (
-			style.AttrBorder {
-				outline,
-				tomo.Border {
-					Width: tomo.I(1),
-					Color: borderColorFocused,
-				},
-			},
-			style.AttrPadding(tomo.I(4, 8)),
-		),
-	},
+		},
+		tomo.AttrPadding(tomo.I(4, 8)),
+		tomo.AttrColor { Color: tomo.ColorRaised },
+	), tomo.R("", "Button")),
 
-	// *.TextInput[*]
-	style.Rule {
-		Role: tomo.R("", "TextInput", ""),
-		Default: style.AS (
-			style.AttrBorder {
-				outline,
-				tomo.Border {
-					Width: tomo.I(1),
-					Color: borderColorInput,
-				},
+	// *.Button[focused]
+	tomo.Ru(tomo.AS (
+		tomo.AttrBorder {
+			outline,
+			tomo.Border {
+				Width: tomo.I(1),
+				Color: borderColorFocused,
 			},
-			style.AttrColor { Color: colorInput },
-			style.AttrPadding(tomo.I(5, 4, 4, 5)),
-		),
-		Focused: style.AS (
-			style.AttrBorder {
-				outline,
-				tomo.Border {
-					Width: tomo.I(1),
-					Color: borderColorFocused,
-				},
-			},
-		),
-	},
-
-	// *.TextView[*]
-	style.Rule {
-		Role: tomo.R("", "TextView", ""),
-		Default: style.AS (
-			style.AttrBorder {
-				outline,
-				tomo.Border {
-					Width: tomo.I(1, 0, 0, 1),
-					Color: borderColorEngraved,
-				},
-			},
-			style.AttrColor { Color: tomo.ColorSunken },
-			style.AttrPadding(tomo.I(8)),
-		),
-	},
+		},
+		tomo.AttrPadding(tomo.I(4, 8)),
+	), tomo.R("", "Button"), "focused"),
 	
-	// *.NumberInput[*]
-	style.Rule {
-		Role: tomo.R("", "NumberInput", ""),
-		Default: style.AS (
-			style.AttrGap { },
-		),
-	},
+	// *.Button[pressed]
+	tomo.Ru(tomo.AS (
+		tomo.AttrBorder {
+			outline,
+			tomo.Border {
+				Width: tomo.I(1, 0, 0, 1),
+				Color: borderColorEngraved,
+			},
+		},
+		tomo.AttrPadding(tomo.I(5, 8, 4, 9)),
+		tomo.AttrColor { Color: colorCarvedPressed },
+	), tomo.R("", "Button"), "pressed"),
+
+	// *.TextInput
+	tomo.Ru(tomo.AS (
+		tomo.ABorder (
+			outline,
+			tomo.Border {
+				Width: tomo.I(1),
+				Color: borderColorInput,
+			}),
+		tomo.AColor(colorInput),
+		tomo.APadding(5, 4, 4, 5),
+	), tomo.R("", "TextInput")),
+
+	// *.TextInput[focused]
+	tomo.Ru(tomo.AS (
+		tomo.ABorder (
+			outline,
+			tomo.Border {
+				Width: tomo.I(1),
+				Color: borderColorFocused,
+			}),
+	), tomo.R("", "TextInput"), "focused"),
+	
+	// *.TextView
+	tomo.Ru(tomo.AS (
+		tomo.ABorder (
+			outline,
+			tomo.Border {
+				Width: tomo.I(1, 0, 0, 1),
+				Color: borderColorEngraved,
+			}),
+		tomo.AColor(tomo.ColorSunken),
+		tomo.APadding(8),
+	), tomo.R("", "TextView")),
+	
+	// *.NumberInput
+	tomo.Ru(tomo.AS (
+		tomo.AGap(0, 0),
+	), tomo.R("", "NumberInput")),
 
 	// *.Container[sunken]
-	style.Rule {
-		Role: tomo.R("", "Container", "sunken"),
-		Default: style.AS (
-			style.AttrBorder {
-				outline,
-				tomo.Border {
-					Width: tomo.I(1, 0, 0, 1),
-					Color: borderColorEngraved,
-				},
+	tomo.Ru(tomo.AS (
+		tomo.AttrBorder {
+			outline,
+			tomo.Border {
+				Width: tomo.I(1, 0, 0, 1),
+				Color: borderColorEngraved,
 			},
-			style.AttrColor { Color: tomo.ColorSunken },
-			style.AttrPadding(tomo.I(8)),
-		),
-	},
+		},
+		tomo.AttrColor { Color: tomo.ColorSunken },
+		tomo.AttrPadding(tomo.I(8)),
+	), tomo.R("", "Container"), "sunken"),
 
 	// *.Container[outer]
-	style.Rule {
-		Role: tomo.R("", "Container", "outer"),
-		Default: style.AS (
-			style.AttrColor { Color: tomo.ColorBackground },
-			style.AttrPadding(tomo.I(8)),
-		),
-	},
+	tomo.Ru(tomo.AS (
+		tomo.AttrColor { Color: tomo.ColorBackground },
+		tomo.AttrPadding(tomo.I(8)),
+	), tomo.R("", "Container"), "outer"),
 
 	// *.Container[menu]
-	style.Rule {
-		Role: tomo.R("", "Container", "menu"),
-		Default: style.AS (
-			style.AttrBorder {
-				outline,
-				tomo.Border {
-					Width: tomo.I(1),
-					Color: borderColorLifted,
-				},
+	tomo.Ru(tomo.AS (
+		tomo.AttrBorder {
+			outline,
+			tomo.Border {
+				Width: tomo.I(1),
+				Color: borderColorLifted,
 			},
-			style.AttrColor { Color: tomo.ColorBackground },
-			style.AttrGap { },
-		),
-	},
+		},
+		tomo.AttrColor { Color: tomo.ColorBackground },
+		tomo.AttrGap { },
+	), tomo.R("", "Container"), "menu"),
 
-	// *.Heading[*]
-	style.Rule {
-		Role: tomo.R("", "Heading", ""),
-		Default: style.AS (
-			style.AttrAlign { X: tomo.AlignMiddle, Y: tomo.AlignMiddle },
-		),
-	},
+	// *.Heading
+	tomo.Ru(tomo.AS (
+		tomo.AAlign(tomo.AlignMiddle, tomo.AlignMiddle),
+	), tomo.R("", "Heading")),
 
-	// *.Separator[*]
-	style.Rule {
-		Role: tomo.R("", "Separator", ""),
-		Default: style.AS (
-			style.AttrBorder {
-				tomo.Border {
-					Width: tomo.I(1),
-					Color: borderColorEngraved,
-				},
+	// *.Separator
+	tomo.Ru(tomo.AS (
+		tomo.AttrBorder {
+			tomo.Border {
+				Width: tomo.I(1),
+				Color: borderColorEngraved,
 			},
-		),
-	},
+		},
+	), tomo.R("", "Separator")),
 
-	// *.Slider[*]
-	style.Rule {
-		Role: tomo.R("", "Slider", ""),
-		Default: style.AS (
-			style.AttrBorder {
-				outline,
-				tomo.Border {
-					Width: tomo.I(1, 0, 0, 1),
-					Color: borderColorEngraved,
-				},
+	// *.Slider
+	tomo.Ru(tomo.AS (
+		tomo.AttrBorder {
+			outline,
+			tomo.Border {
+				Width: tomo.I(1, 0, 0, 1),
+				Color: borderColorEngraved,
 			},
-			style.AttrColor { Color: colorGutter },
-			style.AttrPadding(tomo.I(0, 1, 1, 0)),
-		),
-		Focused: style.AS (
-			style.AttrBorder {
+		},
+		tomo.AttrColor { Color: colorGutter },
+		tomo.AttrPadding(tomo.I(0, 1, 1, 0)),
+	), tomo.R("", "Slider")),
+	
+	// *.Slider[focused]
+	tomo.Ru(tomo.AS (
+			tomo.AttrBorder {
 				outline,
 				tomo.Border {
 					Width: tomo.I(1),
 					Color: borderColorFocused,
 				},
 			},
-			style.AttrPadding(tomo.I(0)),
-		),
-	},
+			tomo.AttrPadding(tomo.I(0)),
+	), tomo.R("", "Slider"), "focused"),
 	
 	// *.Slider[horizontal]
-	style.Rule {
-		Role: tomo.R("", "Slider", "horizontal"),
-		Default: style.AS(style.AttrMinimumSize { X: 48 }),
-	},
+	tomo.Ru(tomo.AS (
+		tomo.AMinimumSize(48, 0),
+	), tomo.R("", "Slider"), "horizontal"),
 	
 	// *.Slider[vertical]
-	style.Rule {
-		Role: tomo.R("", "Slider", "vertical"),
-		Default: style.AS(style.AttrMinimumSize { Y: 48 }),
-	},
+	tomo.Ru(tomo.AS (
+		tomo.AMinimumSize(0, 48),
+	), tomo.R("", "Slider"), "vertical"),
 
-	// *.SliderHandle[*]
-	style.Rule {
-		Role: tomo.R("", "SliderHandle", ""),
-		Default: style.AS (
-			style.AttrBorder {
-				outline,
-				tomo.Border {
-					Width: tomo.I(1),
-					Color: borderColorLifted,
-				},
+	// *.SliderHandle
+	tomo.Ru(tomo.AS (
+		tomo.AttrBorder {
+			outline,
+			tomo.Border {
+				Width: tomo.I(1),
+				Color: borderColorLifted,
 			},
-			style.AttrColor { Color: tomo.ColorRaised },
-			style.AttrMinimumSize { X: 12, Y: 12, },
-		),
-	},
+		},
+		tomo.AttrColor { Color: tomo.ColorRaised },
+		tomo.AttrMinimumSize { X: 12, Y: 12, },
+	), tomo.R("", "SliderHandle")),
 
-	// *.Checkbox[*]
-	style.Rule {
-		Role: tomo.R("", "Checkbox", ""),
-		Default: style.AS (
-			style.AttrBorder {
-				outline,
-				tomo.Border {
-					Width: tomo.I(1, 0, 0, 1),
-					Color: borderColorEngraved,
-				},
-			},
-			style.AttrColor { Color: tomo.ColorSunken },
-			style.AttrPadding(tomo.I(0, 1, 1, 0)),
-			style.AttrMinimumSize { X: 19, Y: 19 },
-		),
-		Focused: style.AS (
-			style.AttrBorder {
-				outline,
-				tomo.Border {
-					Width: tomo.I(1),
-					Color: borderColorFocused,
-				},
-			},
-			style.AttrPadding(tomo.I(0)),
-		),
-	},
+	// *.Checkbox
+	tomo.Ru(tomo.AS (
+		tomo.ABorder (
+			outline,
+			tomo.Border {
+				Width: tomo.I(1, 0, 0, 1),
+				Color: borderColorEngraved,
+			}),
+		tomo.AColor(tomo.ColorSunken),
+		tomo.APadding(0, 1, 1, 0),
+		tomo.AMinimumSize(19, 19),
+		tomo.ATexture(nil),
+		tomo.ATextureMode(tomo.TextureModeCenter),
+	), tomo.R("", "Checkbox")),
 
-	// *.MenuItem[*]
-	style.Rule {
-		Role: tomo.R("", "MenuItem", ""),
-		Default: style.AS (
-			style.AttrPadding(tomo.I(4)),
-			style.AttrGap { X: 4, Y: 4 },
-			style.AttrColor { Color: color.Transparent },
-		),
-		Hovered: style.AS (
-			style.AttrColor { Color: tomo.ColorAccent },
-		),
-		Focused: style.AS (
-			style.AttrColor { Color: tomo.ColorAccent },
-		),
-	},
+	// *.Checkbox[focused]
+	tomo.Ru(tomo.AS (
+		tomo.ABorder (
+			outline,
+			tomo.Border {
+				Width: tomo.I(1),
+				Color: borderColorFocused,
+			}),
+		tomo.APadding(0),
+	), tomo.R("", "Checkbox"), "focused"),
 
-	// *.File[*]
-	style.Rule {
-		Role: tomo.R("", "File", ""),
-		Default: style.AS (
-			style.AttrColor { Color: color.Transparent },
-		),
-		Focused: style.AS (
-			style.AttrColor { Color: tomo.ColorAccent },
-		),
-	},
+	// *.Checkbox[checked]
+	tomo.Ru(tomo.AS (
+		tomo.ATexture(nil), // TODO: checked texture
+	), tomo.R("", "Checkbox"), "checked"),
 
-	// *.TearLine[*]
-	style.Rule {
-		Role: tomo.R("", "TearLine", ""),
-		Default: style.AS (
-			style.AttrBorder {
-				tomo.Border {
-					Width: tomo.I(3),
-					Color: [4]color.Color {
-						color.Transparent,
-						color.Transparent,
-						color.Transparent,
-						color.Transparent,
-					},
-				},
-			},
-			style.AttrColor { Color: tomo.ColorForeground },
-			style.AttrPadding(tomo.I(1, 0, 0, 1)),
-		),
-		Hovered: style.AS (
-			style.AttrBorder {
-				tomo.Border {
-					Width: tomo.I(3),
-					Color: borderColorFocused,
-				},
-			},
-		),
-		Focused: style.AS (
-			style.AttrBorder {
-				tomo.Border {
-					Width: tomo.I(3),
-					Color: borderColorFocused,
-				},
-			},
-		),
-	},
+	// *.MenuItem
+	tomo.Ru(tomo.AS (
+		tomo.AttrPadding(tomo.I(4)),
+		tomo.AttrGap { X: 4, Y: 4 },
+		tomo.AttrColor { Color: color.Transparent },
+	), tomo.R("", "MenuItem")),
+
+	// *MenuItem[focused]
+	tomo.Ru(tomo.AS (
+		tomo.AttrColor { Color: tomo.ColorAccent },
+	), tomo.R("", "MenuItem"), "focused"),
 	
-	// *.Calendar[*]
-	style.Rule {
-		Role: tomo.R("", "Calendar", ""),
-		Default: style.AS (
-			style.AttrBorder {
-				tomo.Border {
-					Width: tomo.I(0, 1, 1, 0),
-					Color: borderColorShade,
+	// *.MenuItem[hovered]
+	tomo.Ru(tomo.AS (
+		tomo.AttrColor { Color: tomo.ColorAccent },
+	), tomo.R("", "MenuItem"), "hovered"),
+
+	// *.File
+	tomo.Ru(tomo.AS (
+		tomo.AttrColor { Color: color.Transparent },
+	), tomo.R("", "File")),
+
+	// *.File[focused]
+	tomo.Ru(tomo.AS (
+		tomo.AttrColor { Color: tomo.ColorAccent },
+	), tomo.R("", "File"), "focused"),
+
+	// *.TearLine
+	tomo.Ru(tomo.AS (
+		tomo.AttrBorder {
+			tomo.Border {
+				Width: tomo.I(3),
+				Color: [4]color.Color {
+					color.Transparent,
+					color.Transparent,
+					color.Transparent,
+					color.Transparent,
 				},
-				outline,
 			},
-			style.AttrColor { Color: colorInput },
-			style.AttrPadding(tomo.I(2)),
-			style.AttrGap { X: 2, Y: 2 },
-		),
-	},
+		},
+		tomo.AttrColor { Color: tomo.ColorForeground },
+		tomo.AttrPadding(tomo.I(1, 0, 0, 1)),
+	), tomo.R("", "TearLine")),
+
+	// *.TearLine[focused]
+	tomo.Ru(tomo.AS (
+		tomo.AttrBorder {
+			tomo.Border {
+				Width: tomo.I(3),
+				Color: borderColorFocused,
+			},
+		},
+	), tomo.R("", "TearLine"), "focused"),
+
+	// *.TearLine[hovered]
+	tomo.Ru(tomo.AS (
+		tomo.AttrBorder {
+			tomo.Border {
+				Width: tomo.I(3),
+				Color: borderColorFocused,
+			},
+		},
+	), tomo.R("", "TearLine"), "hovered"),
 	
-	// *.CalendarGrid[*]
-	style.Rule {
-		Role: tomo.R("", "CalendarGrid", ""),
-		Default: style.AS (
-			style.AttrGap { X: 2, Y: 2 },
-		),
-	},
+	// *.Calendar
+	tomo.Ru(tomo.AS (
+		tomo.AttrBorder {
+			tomo.Border {
+				Width: tomo.I(0, 1, 1, 0),
+				Color: borderColorShade,
+			},
+			outline,
+		},
+		tomo.AttrColor { Color: colorInput },
+		tomo.AttrPadding(tomo.I(2)),
+		tomo.AttrGap { X: 2, Y: 2 },
+	), tomo.R("", "Calendar")),
 	
-	// *.CalendarWeekdayHeader[*]
-	style.Rule {
-		Role: tomo.R("", "CalendarWeekdayHeader", ""),
-		Default: style.AS (
-			style.AttrPadding(tomo.I(2)),
-			style.AttrColor { Color: colorCalendarWeekdayHeader },
-		),
-	},
+	// *.CalendarGrid
+	tomo.Ru(tomo.AS (
+		tomo.AttrGap { X: 2, Y: 2 },
+	), tomo.R("", "CalendarGrid")),
+	
+	// *.CalendarWeekdayHeader
+	tomo.Ru(tomo.AS (
+		tomo.AttrPadding(tomo.I(2)),
+		tomo.AttrColor { Color: colorCalendarWeekdayHeader },
+	), tomo.R("", "CalendarWeekdayHeader")),
 	
 	// *.CalendarDay[weekday]
-	style.Rule {
-		Role: tomo.R("", "CalendarDay", "weekday"),
-		Default: style.AS (
-			style.AttrPadding(tomo.I(2)),
-			style.AttrMinimumSize { X: 32, Y: 32 },
-			style.AttrColor { Color: colorCalendarDay },
-		),
-	},
+	tomo.Ru(tomo.AS (
+		tomo.AttrPadding(tomo.I(2)),
+		tomo.AttrMinimumSize { X: 32, Y: 32 },
+		tomo.AttrColor { Color: colorCalendarDay },
+	), tomo.R("", "CalendarDay"), "weekday"),
 
 	// *.CalendarDay[weekend]
-	style.Rule {
-		Role: tomo.R("", "CalendarDay", "weekend"),
-		Default: style.AS (
-			style.AttrPadding(tomo.I(2)),
-			style.AttrMinimumSize { X: 32, Y: 32 },
-			style.AttrColor { Color: colorCalendarWeekend },
-		),
-	},
+	tomo.Ru(tomo.AS (
+		tomo.AttrPadding(tomo.I(2)),
+		tomo.AttrMinimumSize { X: 32, Y: 32 },
+		tomo.AttrColor { Color: colorCalendarWeekend },
+	), tomo.R("", "CalendarDay"), "weekend"),
 	
-	// *.TabbedContainer[*]
-	style.Rule {
-		Role: tomo.R("", "TabbedContainer", ""),
-		Default: style.AS (
-			style.AttrGap { },
-		),
-	},
+	// *.TabbedContainer
+	tomo.Ru(tomo.AS (
+		tomo.AGap(0, 0),
+	), tomo.R("", "TabbedContainer")),
 	
-	// *.TabRow[*]
-	style.Rule {
-		Role: tomo.R("", "TabRow", ""),
-		Default: style.AS (
-			style.AttrBorder {
-				tomo.Border {
-					Width: tomo.I(1, 1, 0, 1),
-					Color: borderColorOutline,
-				},
-				tomo.Border {
-					Width: tomo.I(1, 0, 0, 1),
-					Color: borderColorEngraved,
-				},
+	// *.TabRow
+	tomo.Ru(tomo.AS (
+		tomo.AttrBorder {
+			tomo.Border {
+				Width: tomo.I(1, 1, 0, 1),
+				Color: borderColorOutline,
 			},
-			style.AttrGap { X: 0, Y: 0 },
-			style.AttrColor { Color: colorGutter },
-			style.AttrPadding(tomo.I(1, 0, 0, 0)),
-		),
-	},
+			tomo.Border {
+				Width: tomo.I(1, 0, 0, 1),
+				Color: borderColorEngraved,
+			},
+		},
+		tomo.AttrGap { X: 0, Y: 0 },
+		tomo.AttrColor { Color: colorGutter },
+		tomo.AttrPadding(tomo.I(1, 0, 0, 0)),
+	), tomo.R("", "TabRow")),
 	
 	// *.TabSpacer[left]
-	style.Rule {
-		Role: tomo.R("", "TabSpacer", "left"),
-		Default: style.AS (
-			style.AttrBorder {
-				tomo.Border {
-					Width: tomo.I(0, 0, 1, 0),
-					Color: borderColorEngraved,
-				},
-				tomo.Border {
-					Width: tomo.I(0, 0, 1, 0),
-					Color: borderColorOutline,
-				},
+	tomo.Ru(tomo.AS (
+		tomo.AttrBorder {
+			tomo.Border {
+				Width: tomo.I(0, 0, 1, 0),
+				Color: borderColorEngraved,
 			},
-			style.AttrMinimumSize { X: 1 },
-		),
-	},
+			tomo.Border {
+				Width: tomo.I(0, 0, 1, 0),
+				Color: borderColorOutline,
+			},
+		},
+		tomo.AttrMinimumSize { X: 1 },
+	), tomo.R("", "TabSpacer")),
 	
 	// *.TabSpacer[right]
-	style.Rule {
-		Role: tomo.R("", "TabSpacer", "right"),
-		Default: style.AS (
-			style.AttrBorder {
-				tomo.Border {
-					Width: tomo.I(1, 0, 0, 0),
-					Color: [4]color.Color {
-						colorGutter, colorGutter,
-						colorGutter, colorGutter,
-					},
-				},
-				tomo.Border {
-					Width: tomo.I(0, 0, 1, 0),
-					Color: borderColorEngraved,
-				},
-				tomo.Border {
-					Width: tomo.I(0, 0, 1, 1),
-					Color: borderColorOutline,
-				},
-				tomo.Border {
-					Width: tomo.I(0, 0, 0, 1),
-					Color: borderColorShade,
+	tomo.Ru(tomo.AS (
+		tomo.AttrBorder {
+			tomo.Border {
+				Width: tomo.I(1, 0, 0, 0),
+				Color: [4]color.Color {
+					colorGutter, colorGutter,
+					colorGutter, colorGutter,
 				},
 			},
-			style.AttrMinimumSize { X: 3 },
-		),
-	},
+			tomo.Border {
+				Width: tomo.I(0, 0, 1, 0),
+				Color: borderColorEngraved,
+			},
+			tomo.Border {
+				Width: tomo.I(0, 0, 1, 1),
+				Color: borderColorOutline,
+			},
+			tomo.Border {
+				Width: tomo.I(0, 0, 0, 1),
+				Color: borderColorShade,
+			},
+		},
+		tomo.AttrMinimumSize { X: 3 },
+	), tomo.R("", "TabSpacer"), "right"),
 	
-	// *.Tab[*]
-	style.Rule {
-		Role: tomo.R("", "Tab", ""),
-		Default: style.AS (
-			style.AttrBorder {
-				tomo.Border {
-					Width: tomo.I(1, 0, 0, 0),
-					Color: [4]color.Color {
-						colorGutter, colorGutter,
-						colorGutter, colorGutter,
-					},
-				},
-				tomo.Border {
-					Width: tomo.I(0, 0, 1, 0),
-					Color: borderColorEngraved,
-				},
-				tomo.Border {
-					Width: tomo.I(1, 0, 1, 1),
-					Color: borderColorOutline,
-				},
-				tomo.Border {
-					Width: tomo.I(1, 1, 0, 1),
-					Color: borderColorLifted,
+	// *.Tab
+	tomo.Ru(tomo.AS (
+		tomo.AttrBorder {
+			tomo.Border {
+				Width: tomo.I(1, 0, 0, 0),
+				Color: [4]color.Color {
+					colorGutter, colorGutter,
+					colorGutter, colorGutter,
 				},
 			},
-			style.AttrPadding(tomo.I(4, 8, 4, 8)),
-			style.AttrColor { Color: tomo.ColorRaised },
-		),
-	},
+			tomo.Border {
+				Width: tomo.I(0, 0, 1, 0),
+				Color: borderColorEngraved,
+			},
+			tomo.Border {
+				Width: tomo.I(1, 0, 1, 1),
+				Color: borderColorOutline,
+			},
+			tomo.Border {
+				Width: tomo.I(1, 1, 0, 1),
+				Color: borderColorLifted,
+			},
+		},
+		tomo.AttrPadding(tomo.I(4, 8, 4, 8)),
+		tomo.AttrColor { Color: tomo.ColorRaised },
+	), tomo.R("", "Tab")),
 	
 	// *.Tab[active]
-	style.Rule {
-		Role: tomo.R("", "Tab", "active"),
-		Default: style.AS (
-			style.AttrBorder {
-				tomo.Border {
-					Width: tomo.I(1, 0, 0, 1),
-					Color: borderColorOutline,
-				},
-				tomo.Border {
-					Width: tomo.I(1, 1, 0, 1),
-					Color: borderColorLifted,
-				},
+	tomo.Ru(tomo.AS (
+		tomo.AttrBorder {
+			tomo.Border {
+				Width: tomo.I(1, 0, 0, 1),
+				Color: borderColorOutline,
 			},
-			style.AttrPadding(tomo.I(4, 8, 4, 8)),
-			style.AttrColor { Color: tomo.ColorBackground },
-		),
-	},
+			tomo.Border {
+				Width: tomo.I(1, 1, 0, 1),
+				Color: borderColorLifted,
+			},
+		},
+		tomo.AttrPadding(tomo.I(4, 8, 4, 8)),
+		tomo.AttrColor { Color: tomo.ColorBackground },
+	), tomo.R("", "Tab"), "active"),
 
-	// *.Swatch[*]
-	style.Rule {
-		Role: tomo.R("", "Swatch", ""),
-		Default: style.AS (
-			style.AttrBorder {
-				outline,
-			},
-			style.AttrMinimumSize { X: 19, Y: 19 },
-		),
-		Focused: style.AS (
-			style.AttrBorder {
-				outline,
-				tomo.Border {
-					Width: tomo.I(1),
-					Color: borderColorFocused,
-				},
-			},
-		),
-	},
+	// *.Swatch
+	tomo.Ru(tomo.AS (
+		tomo.AttrBorder {
+			outline,
+		},
+		tomo.AttrMinimumSize { X: 19, Y: 19 },
+	), tomo.R("", "Swatch")),
 
-	// *.ColorPickerMap[*]
-	style.Rule {
-		Role: tomo.R("", "ColorPickerMap", ""),
-		Default: style.AS (
-			style.AttrBorder {
-				outline,
-				tomo.Border {
-					Width: tomo.I(1, 0, 0, 1),
-					Color: borderColorEngraved,
-				},
+	// *.Swatch[focused]
+	tomo.Ru(tomo.AS (
+		tomo.AttrBorder {
+			outline,
+			tomo.Border {
+				Width: tomo.I(1),
+				Color: borderColorFocused,
 			},
-			style.AttrColor { Color: tomo.ColorSunken },
-			style.AttrMinimumSize { X: 128, Y: 128 },
-		),
-	},
+		},
+	), tomo.R("", "Swatch"), "focused"),
+
+	// *.ColorPickerMap
+	tomo.Ru(tomo.AS (
+		tomo.AttrBorder {
+			outline,
+			tomo.Border {
+				Width: tomo.I(1, 0, 0, 1),
+				Color: borderColorEngraved,
+			},
+		},
+		tomo.AttrColor { Color: tomo.ColorSunken },
+		tomo.AttrMinimumSize { X: 128, Y: 128 },
+	), tomo.R("", "ColorPickerMap")),
 }
diff --git a/internal/style/fallback/wintergreen.go b/internal/style/fallback/wintergreen.go
index 229501d..fd2144e 100644
--- a/internal/style/fallback/wintergreen.go
+++ b/internal/style/fallback/wintergreen.go
@@ -2,12 +2,12 @@ package fallbackStyle
 
 import "image/color"
 import "git.tebibyte.media/tomo/tomo"
-import "git.tebibyte.media/tomo/nasin/internal/style"
 
 // New returns Wintergreen, the default Tomo style. It is neutral-gray with
 // green and turquoise accents.
-func New () *style.Style {
-	return &style.Style {
+func New () *tomo.Style {
+	return &tomo.Style {
+		Rules: rules,
 		Colors: map[tomo.Color] color.Color {
 			tomo.ColorBackground: colorBackground,
 			tomo.ColorForeground: colorForeground,
@@ -15,6 +15,5 @@ func New () *style.Style {
 			tomo.ColorSunken:     colorCarved,
 			tomo.ColorAccent:     colorFocus,
 		},
-		Rules: rules,
 	}
 }