This issue has already been discussed, and we at Nitro Designs personally feel that airbrushing one's vehicle does not break any legal rules. Airbrushing is an artform that is meant to be appreciated and not offend. JPJ ruling states that a vehicle's colour cannot exceed 3 colours. We can airbrush within such confines and still come up with a masterpiece, or we can exceed the colour quota if the customer requires us to do so. However, the responsibility then falls upon the customer should he want more than the legally permitted colours. After all that has been said, it ultimately comes down to you and your decision. I mean, do you insist your windows to be tinted heavily and then go back to the shop complaining that you have been summoned? Is it logical to install a NOS kit and then cry "wah, how can leh i get saman?!"
Your life, your car, your decision, your responsibility. Enough said.