My CT Curly is normaly turquiose, red and green (like a rooster) however when I change his water he turns brown and lose most of his color and shows dark stripes. He does eventually color up again. Last night I changed the water Tonight he still has not colored up completely His body near his head is still brown and I can still see stripes although a bit faded. He was in a gallon critter carries I've upped him to a 2 gallon sterilite container until a large tank is cycled. Should I be concerned? I think he was happy in the gallon tank he's pretty slow sedentary fish even though he now has more. He is very nervous and jumpy in the larger container. If I put him back in the gallon container it will mean more water changes.