Its hard to answer your question..since you don't state what color anything is. I think the rules are pretty clear in that the entire bumper must be red or blue as appropriate, except for the contrasting color numbers.
We found great bumper material (1000 DENIER NYLON DYNAMITE ) at
http://www.rochfordsupply.com/ and they delivered pretty quickly (though they only had to ship 80 miles) The colors are excellent red and blue matches to alliance colors. It was also about 1/2 the price of Cordura a other suppliers.