OMG YOU HAVE MY TOTAL FRIGGING SUPPORT! THIS WOULD BE SUCH AN AMAZING ADD ON TO EPISODE!
(All outfits really could be different shades)
Knowing me if they added this though I would make a bunch of outfits for a character and make it so the reader could choose the outfits and call them blue, very slightly lighter blue, a little lighter blue, light blue, slightly darker blue, a little darker blue, and dark blue. 
I would make all of the clothes so close in color the reader could hardly tell the difference.