make pop up play queue slightly translucent

ui/theme/overrides.go

@@ -0,0 +1,41 @@
+package theme
+
+import (
+	"image/color"
+
+	"fyne.io/fyne/v2"
+)
+
+type colorOverrideTheme struct {
+	colorTransformName fyne.ThemeColorName
+	colorTransform     func(color.Color) color.Color
+}
+
+func WithColorTransformOverride(name fyne.ThemeColorName, transform func(color.Color) color.Color) fyne.Theme {
+	return &colorOverrideTheme{
+		colorTransformName: name,
+		colorTransform:     transform,
+	}
+}
+
+var _ fyne.Theme = (*colorOverrideTheme)(nil)
+
+func (c *colorOverrideTheme) Color(n fyne.ThemeColorName, v fyne.ThemeVariant) color.Color {
+	col := fyne.CurrentApp().Settings().Theme().Color(n, v)
+	if n == c.colorTransformName {
+		return c.colorTransform(col)
+	}
+	return col
+}
+
+func (*colorOverrideTheme) Font(s fyne.TextStyle) fyne.Resource {
+	return fyne.CurrentApp().Settings().Theme().Font(s)
+}
+
+func (*colorOverrideTheme) Icon(s fyne.ThemeIconName) fyne.Resource {
+	return fyne.CurrentApp().Settings().Theme().Icon(s)
+}
+
+func (*colorOverrideTheme) Size(s fyne.ThemeSizeName) float32 {
+	return fyne.CurrentApp().Settings().Theme().Size(s)
+}