Well the paint job is technically illegal because of distracting of other drivers. Its the same way that neon lights (I hate those) under cars is illegal. You won't get pulled over just for that but, when you do get pulled over for something else they will add it to the fine.
As for laser and radar, It will actually make you more visible to speed detection. Laser speed detection isn't really a laser but it is a more narrowly focused ranged stream of light. With radar, you have to have paint that would absorb and dampen radio waves.