Well, yesterday I was thinking that the discoloration during the day might be related to stress. So I put some extra stress coat and aquarium salt in the tank and but in a bubbler. I don't know which one did the trick, but the little guy's color got a lot better within an hour or two.

However, I still find them both discolored in the morning. I'm thinking it's normal. I remember when I had saltwater fish their colors seemed to dull if I turned the light off for awhile. (like overnight) But then the color would come back after the light was back on.

How long does it take your neons to get their color back?