Is there a way to purposely get the soles of some Jordan's yellow? Read below?

I'm getting some 2011 Concords but the soles are all Icey blue makes it look kinda of fake so is there a way to yellow the soles not to much just a lil.. I hear of outing them in the sun but were in the middle of winter and there's hardly any sun.. HELP? Any like soaps or something the makes them yellow ..