I've got a Squier SE Strat that I'm modding. It's a polyurethane finish I believe and I was wondering if simply painting over it with an acrylic paint (applied by brush) would stay on the finish?
You'll need to scuff sand it a bit, for the new coat to adhere properly. CHeck out some of the tutorials.
You really need to use spray paint. You can brush it on, but it will not turn out that great.