Misc - not an issue

[Paras Bhattrai]

Hi,
If this app was to scale, would it be safe to create a single map[string]color.RGBA instead of separate colorNames and colors. A little mis-typing could break
randColorName := rand.Int()%len(colorNames)
randColor := rand.Int() % len(colors)

Just thoughts, :)

Was thinking to try map instead of win.JustPressed(pixelgl.Key1) to reduce if else decision tree.