:About iglets changing colors when they are handled, i agree 100%!Kenya often does that!Perhaps that happens not only because they feel safe in our hands but because our hands warm their little bodies!
I'd have to say this is your opinion of what lizards do when you hold them... Compare that color change to a REALLY scared baby ig. Similar? YES. Just like your picture of a small iguana laying FLAT on your hand, showing stress colors. Is he comfortable, enjoying the body heat, or is he scared to death, and just trying to stay as low as possible, hoping no one will try to eat him?