Sam: Am not for sure if there is such a thing or not. I do know that Bass Pro sells the plain black spare tire covers for about $10. I am checking with our parts department here at Tracker to see if they can tell me. Will let you know if I hear anything.
Sam - I've been having the same thoughts, even though I have the chrome spare (order the plain one but Tracker was nice enough, or mistaken, and put the chrome one on) and would love a nice cover, would keep me from having to keep white-washing the white letters on the spare.
If no one finds a Tracker cover, I may try a truck extras shop and see if they can make one.