Cycle being number one to all systems i think the temp should be raised as well.
As i posted in my first thread, because i remember talking about your tank not long ago, i would test the water and get some results. These results, in my personal opinion, will tell you the reason your damsel is darker then normal. If i had to guess your ammonia is elevated and is causing stress, which all fish will act differently to, but will none the less be effected. I would also recommend a water change for the tank. If its possible i would also remove the fish and keep him somewhere the water can be kept clean, while your tank finishes the cycle, and then once that happens, add the fish back to the system. This is your best bet at getting your tank past stage 1, with 100% success.