I heard with the dye it actually penatrates the plastic and you dont have to worry about chipping the buttons and stuff that gets a lot of wear. I'm not sure about primer for plastic, I will have to look into that.
I am/was actually kinda worried about painting this with soemthing slipped between the face and the felt because I didnt know if the paint would make the paper I put in there stick to the face, and if I "cut" the paint where it stuck how it would look.
I'm leaning towards dye but price is a factor.