Anyone here painted get in trouble for painting car body parts outside?

I'm thinking of painting my front bumper on my camaro and was wondering if cops will give me a hard time about it. I am planning to do this on my brothers backyard. Has anyone here painted any body parts of their own car? Thanks in advance!

I've never done it but a guy at work does it all the time(paints whole cars on the side) and apparantly nothing happens to him. I would be worried about the quality but that's your deal!

Later