I agree, that looks OK. It will vary a bit but as long as it isn't constantly messy or overwhelmingly stinky for a stretch of time, it's not usually a concern.
Mirage came out of brumation on April 26. He was doing great. On May 2 he started acting funny. We just redid his tank, and he keeps going into one of his hides. He just lays there. He shows no intrest in food. HELP!