I have an idea for a dirt bike pack that is like the motorcycle pack made by Phyodeux.
You would have the system where there is wheels stabilizing the sides that are invisible.
1. Dirt bike: Motorcross
A dirt bike with quick acceleration and a high speed. the number plates on the sides will remain white. The rest of the body is able to be colored whatever.
Design:

2. Dirt bike: Trail
A dirt bike with modest acceleration but a high amount of tourqe.
for coloring look at above dirt bike.
Design:

3. Dirt bike: Supermoto
A dirt bike with street tires and mirrors.
normal acceleration and high speeds.
look at coloring of above bikes.
Design:

I would like replies, it took me awhile to put this together.
Please be positive.