First off I searched and I couldn't find anything. I took the rubber off of my climate control knobs and I would like to paint them blue so they contrast with my white HVAC overlay. Is there any special kind of paint that I should use to paint these with or not? Also should I spray the back or front?
Stained glass paint from a craft store will work.
Spray the backs. That way the paint does not rub off after extended use.
I actually opted for the one that uses a brush. As long as you do VERY thin coats until you're happy with the result, it'll never come off. Try rushing things with one thick coat and you'll be soooorrrrrryyyyyy
If I use the glass paint will they glow blue at night or not much due to the paint?
Stained glass paint is designed to dry mostly-transparent as long as it is in thin coats.
So, in effect, yes. They'll glow blue.
you can also use that metal cast paint from dupli color since its a top coat you can see through it thats what i used on mine