Color editing popups use swatch label for title

internal/color.go

@@ -62,8 +62,6 @@ func RGBAToHSVA (r, g, b, a uint32) HSVA {
 	// Adapted from:
 	// https://www.cs.rit.edu/~ncs/color/t_convert.html
 	
-	// FIXME: this does not always work!
-
 	component := func (x uint32) float64 {
 		return clamp01(float64(x) / 0xFFFF)
 	}

labelswatch.go

@@ -22,6 +22,7 @@ func NewLabelSwatch (value color.Color, text string) *LabelSwatch {
 		label:        NewLabel(text),
 	}
 	box.SetRole(tomo.R("objects", "LabelSwatch", ""))
+	box.swatch.label = text
 	box.label.SetAlign(tomo.AlignStart, tomo.AlignMiddle)
 	box.Add(box.swatch)
 	box.Add(box.label)

swatch.go

@@ -14,6 +14,7 @@ type Swatch struct {
 	tomo.CanvasBox
 	value color.Color
 	editing bool
+	label string
 	on struct {
 		valueChange event.FuncBroadcaster
 	}
@@ -72,7 +73,11 @@ func (this *Swatch) Choose () {
 		log.Println("objects: could not create swatch modal:", err)
 		return
 	}
+	if this.label == "" {
 		window.SetTitle("Select Color")
+	} else {
+		window.SetTitle(this.label)
+	}
 	
 	colorPicker := NewColorPicker(this.Value())
 	colorPicker.OnValueChange(func () {