jajeanpierre
Chameleon Enthusiast
Janet, look at the picture he posted of the dark "spots" he's concerned about, they are the normal development of the bars of an Ambilobe Panther chameleon. The cham isn't dark and trying to absorb heat, or showing stress markings, he looks normal for a male Panther his age.
I thought he was pretty normal looking, too, but what do I know about panthers? Nothing.
I tried to answer the "too dark" question in pretty general terms and his cage layout a little more specifically.