Add rounded corner and padding

main.go

@@ -204,7 +204,7 @@ func initMainApp() {
 	/*if themeVariant == theme.VariantDark {
 		grayScaleList = 220
 	}*/
-	listContainer := container.NewStack(canvas.NewRectangle(color.RGBA{R: grayScaleList, G: grayScaleList, B: grayScaleList, A: 255}), listDisplay)
+	listContainer := container.NewPadded(&canvas.Rectangle{FillColor: color.RGBA{R: grayScaleList, G: grayScaleList, B: grayScaleList, A: 255}, CornerRadius: 10}, listDisplay)
 
 	leftSide := container.NewBorder(vbox, nil, nil, nil, listContainer)
 

theme.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"fyne.io/fyne/v2"
+	"fyne.io/fyne/v2/theme"
 	"image/color"
 )
 
@@ -12,5 +13,18 @@ type forcedVariant struct {
 }
 
 func (f *forcedVariant) Color(name fyne.ThemeColorName, _ fyne.ThemeVariant) color.Color {
+	/*if name == theme.ColorNameBackground {
+		return color.White
+	}*/
+	theme.SelectionRadiusSize()
 	return f.Theme.Color(name, f.variant)
 }
+
+func (f *forcedVariant) Size(s fyne.ThemeSizeName) float32 {
+	if s == theme.SizeNameSelectionRadius {
+		return 10
+	} else if s == theme.SizeNameSeparatorThickness {
+		return 2
+	}
+	return f.Theme.Size(s)
+}