Sure! You can decorate your bike, leathers, helmet, trailer with anything that you want. Put all your class finishes on the bodywork. However, you'll still need to be identified by your rider number for official purposes with the current system.

The other question here is to ask is honesty how many would actually run anything other than their regular number? I don't believe we 50% participation between the current top ten riders in ROR-GTO and all of the other class champions reversing the colors on their number plates.