Must wait five seasons, and then apply for a change in advance. I really doubt it. Our merchandise sales are still through the roof. I'd personally like to see us at home with the grey pants a few times, we looked great IMHO. Reminds me of the old Hawks. Teams declare jersey color in advance, but can wear any pants in their inventory (Blue, Grey, White right now). We can only wear alts twice, not counting TNF Color Rush. So Grey jersey will be twice per year.
We will probably see a Color Rush jersey for Thursday Night Football. Teams will be in one color from neck to shoe. Had four such games this season, all TNF will be Color Rush next season. We could maybe be all blue or all grey, but I bet you will see us in new green Jerseys and green pants (and socks) for that single game. Teams are encouraged to go bold.