[billbo911]

As mentioned before, there is one thing that must be taken into account when using this bumper cover configuration. Do not forget that the ends of the bumpers must also be wrapped in such a way that ONLY the alliance color you are on at that time can be seen.
The banging around that is sure to happen in this game can very easily place considerable forces on the cover fabric. Those forces need to be anticipated and handled in a way that will prevent the cover from slipping and exposing the opposing alliance color.

<R12-B> Alternately, the ROBOT may use changeable BUMPER covers. The BUMPER covers
Each ROBOT may be built with two complete sets of interchangeable BUMPERS, one red and one blue. If this method is chosen, the BUMPERS must be identical except for the color of the covering fabric (see Rule <R07-F>).
− may be removable, reversible, or fixed
− must completely enclose the BUMPERS
− must show only a single color such that when the BUMPER covers are in use, only fabric of the assigned ALLIANCE color may be visible...

I'm getting the distinct impression from Dave that this will be strictly enforced. The bottom line is, you can spend up to $8500 to build a robot and enter a competition, but every rule must be met to the letter or you can't participate. IMHO, that is as it should be. Otherwise, why have rules?