My N98 Tech Fleece (from tech fleece gate) was too small...so I called Nike today to exchange for a size bigger. They said that they can sell me the size I need for the same (TF gate) price and that I can just return the other via mail or at a Nike store for a refund.
..what I'm trying to say is...by saying you want to exchange, you can get another TF item sent to you for the same low price..and then never make the return that you had "intended to".
Basically, just a way to get another for the same price. Mine was for size (and I'm actually returning mine)..but I'm sure you could say you're exchanging for a different color.
I hope that makes sense...it's worth a shot.