I was trying to follow the example in this blog post to provide different color schemes.
Everything is working fine except the Radio Button text. When the Fill color changes the Fill color of the text part doesn't change until I hover over the text. Example below of the results when changing between a white and black background.
As it is now I have to set the Fill to RGBA(0,0,0,0) to make it usable and rely on the screen fill color.