I think I saw the Mobile Horse Supply custom stuff somewhere, too. I'll have to go searching again.
I emailed Cavallo and no, they won't do brown in the shadbelly. Apparently not even custom ordered. Pity. I may have to go the navy route but I'm going to try really hard to locate a brown one first! (that I can afford...)
Another question: someone had sent me someone's info with a brown one in their tack store but it was in a long length. Where exactly is a shadbelly longer in length than a standard size? Just the sleeves or the torso/tails, too?