(a).
Thank you for reminding me of the content mistake for putting the image that is not appropriate, I apologize for it and I have to remove it.

(b)
In my place there is almost no chameleon animal, some time ago I just borrowed from friends and the picture is indeed rare. Thanks for the information.

(c)
So, on the luminous part of the body the skin is thin and transparent, incredible. Incidentally I am currently living in the city (Lhokseumawe), I used to live in the village. Of course many of the night animals I encounter, such as fireflies (have lights), butterflies of angels (all wings are circled in a line light), silver lizards (above their bodies, from nose to tail tip there is silver thread)
I once had a bee honey farm, several times I've seen a strange snake in the farm. His body is the size of a thumb, his head as big as a ping pong ball, about 150 cm in length. During the day, the snake is very frightening to me because of its rough head like a dragon (more or less) but when the night part of the body is full of color and on the head there are 7 irregular spots glowing like in your chameleon picture. Then there is a geckos (a kind of big lizard) two upper eyelids there is also a light like the chameleon. So now I know about the light on the beast.

(d)
So it's not from chemicals on their body parts. I understand now.

(e)
Ha ha ha ha ha ... I have told you, I am a crazy man .... but not an idiot. It's about something I've worked on, except for snakes, I've peeled and split every strange animal I've come across to know who and how they are. I have read many books of biology, chemistry and physics beyond a college student in the department, even I have a private mini laboratory at that time. I am currently a Computer Technology Engineer, as an analyst and programming software. I love science so much more to share, that reason makes me join in Indo-STEM so that me and my friends want to invest to develop Indo-STEM (please ask @kharrazi and @ jamhuery) unfortunately indo-STEM is not There are more. For me, the truth I admit is true but the wrong one never becomes true to me. Please read my comments on @lemouth post, very exciting. So I'm NOT IDIOT just crazy learning. Hahahaha ... Claim you I am an idiot, hahaha not a problem, it is good because I have hobbi laugh .... hehehe. Thank you for your new information and knowledge. See you again.