To be a jerk about the whole chameleon thing, I find us humans to be more chameleon-like than any of our gear. Chameleons change color based on mood, light, temperature - I find my tastes and whims do as well.
HD800 are certainly what I would call chameleon. Another phone that is like that is the HD650. For a dark headphone it sounds characteristically different from different amps and sources. The HD800 and HD650 also respond quite dramatically to balanced drive... more so than the Hifimans and Audezes that have come through here. Actually I think both those Sennheisers are far more chameleon than the HE-500, LCD-2 r1 or 2.
Solderdude, it seems you have a hard time comprehending something unless you can see numbers or graphs. What I'm talking about is a concept and a pretty important one despite the silly animal metaphor. Maybe I'll draw you some pictures at some point.