If you have wheels of another color, race them.The top racers may have discovered something, but, I can tell you with all certainty that they could beat most (in particular, me) with any color wheels. At one time, I was focused on the wax everyone was using (part of the joke I use every now and then), oil, wheel vendor, weighting, etc. and believed if I knew all of this, I could just be a top racer. Sadly, its not true. It's more in the application / process.
But yellow wheels look promising to me as well (although its hard to see in the bores because of the color as compared to black)...