I think this dingyness has to do with male hormones, or mating; somehow the act of breeding is responsible for this change.
I have another 08 pyro male who did not mate this year and he looks nice and bright. The one who did not mate is with an 09 female who did not ovulate and trigger him to want to mate. He never went on any hunger strikes/breeding modes like the dingy one did. In fact, since he came out of brumation and I jump started him with a lizard, he has been eating steadily all spring and has put on some real growth. No more sporadic feeding habits for this guy, which is a first for this little male. If next year he mates and turns dingy, I will be certain mating is the cause of this dingyness.

The 08/09 pair this May. He is the one with his head in the center, with not so heavy black crossovers.
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Bob
Pyromaniac AKA Greatballzofire
Keeping cats allows man to cohabitate with tigers. Keeping reptiles allows man to cohabitate with dinosaurs.