The illuminated AV switches are dedicated to the colors that you pick. If you choose a green AV switch it stays green. You can change the colors of your blade, but not the switch. The illuminated AV switch has a single led in the switch causing it to light up. You can't change the color in the switch. If you don't like having say a green switch when changing the blade to red I would just get a silver or black non illuminated switch.
You only get one switch color, but you can change when it's on or off and how it behaves.
The other option is to set that accent channel to turn off on other sounds/color profiles so that if you aren't using a green blade, your green switch doesn't light up. Or only have it light up for power on/power off or only of FOC.
This way you can have your switch set up just for any blade colors your switch color will work with or compliment, and off for anything it would clash with.