Replaced orange with a dim/grey color

backends/x/draw.go

@@ -118,9 +118,17 @@ func (backend *Backend) drawRune (
 			backend.boundsOfCell(x, y))
 	}
 
-	backend.sprayRuneMask (
-		mask, destinationRectangle,
-		maskPoint, backend.colors[runeColor])
+	// cue a series of pointless optimizations
+	alphaMask, isAlpha := mask.(*image.Alpha)
+	if isAlpha {
+		backend.sprayRuneMaskAlpha (
+			alphaMask, destinationRectangle,
+			maskPoint, backend.colors[runeColor])
+	} else {
+		backend.sprayRuneMask (
+			mask, destinationRectangle,
+			maskPoint, backend.colors[runeColor])
+	}
 }
 
 func (backend *Backend) sprayRuneMask (
@@ -150,6 +158,32 @@ func (backend *Backend) sprayRuneMask (
 	}}
 }
 
+func (backend *Backend) sprayRuneMaskAlpha (
+	mask      *image.Alpha,
+	bounds    image.Rectangle,
+	maskPoint image.Point,
+	fill      xgraphics.BGRA,
+) {
+	maxX := bounds.Max.X - bounds.Min.X
+	maxY := bounds.Max.Y - bounds.Min.Y
+	
+	for y := 0; y < maxY; y ++ {
+	for x := 0; x < maxX; x ++ {
+		alpha := mask.AlphaAt(x + maskPoint.X, y + maskPoint.Y).A
+		backend.canvas.SetBGRA (
+			x + bounds.Min.X,
+			y + bounds.Min.Y - backend.metrics.descent,
+			xgraphics.BlendBGRA (
+				backend.colors[stone.ColorBackground],
+				xgraphics.BGRA {
+					R: fill.R,
+					G: fill.G,
+					B: fill.B,
+					A: alpha,
+				}))
+	}}
+}
+
 func fillRectangle (
 	source      image.Image,
 	destination draw.Image,

buffer.go

@@ -8,8 +8,8 @@ type Color uint8
 const (
 	ColorBackground  Color = 0x0
 	ColorForeground  Color = 0x1
-	ColorRed         Color = 0x2
-	ColorOrange      Color = 0x3
+	ColorDim         Color = 0x2
+	ColorRed         Color = 0x3
 	ColorYellow      Color = 0x4
 	ColorGreen       Color = 0x5
 	ColorBlue        Color = 0x6

config.go

@@ -55,10 +55,10 @@ func (config *Config) load () {
 		color.RGBA { R: 0, G: 0, B: 0, A: 0 },
 		// foreground
 		color.RGBA { R: 0xFF, G: 0xFF, B: 0xFF, A: 0xFF },
+		// dim
+		color.RGBA { R: 0x80, G: 0x80, B: 0x80, A: 0xFF },
 		// red
 		color.RGBA { R: 0xFF, G: 0x00, B: 0x00, A: 0xFF },
-		// orange
-		color.RGBA { R: 0xFF, G: 0x80, B: 0x00, A: 0xFF },
 		// yellow
 		color.RGBA { R: 0xFF, G: 0xFF, B: 0x00, A: 0xFF },
 		// green
@@ -154,10 +154,10 @@ func (config *Config) loadFile (path string) {
 			config.colors[ColorBackground] = valueColor
 		case "colorForeground":
 			config.colors[ColorForeground] = valueColor
+		case "colorDim":
+			config.colors[ColorDim] = valueColor
 		case "colorRed":
 			config.colors[ColorRed] = valueColor
-		case "colorOrange":
-			config.colors[ColorOrange] = valueColor
 		case "colorYellow":
 			config.colors[ColorYellow] = valueColor
 		case "colorGreen":