Quote Originally Posted by zooplan View Post
Itīs easy to see how lacking of one pigment is changing colours, when youīve learned that almost all colours on a snake are mixtures of black(blue), red and yellow pigments.
Also since different pigments can be a different levels in the skin, results of certain colors being absent can have surprising results. In the case of chromatophores, the usual rules of red + yellow = orange and yellow + blue = green do not necessarily apply, especially when another unseen pigment is revealed by removing just one other pigment. I guess what I'm getting at is that green frogs aren't really green, and I don't think my blue snakes are really blue. It's an illusion.

"The green color typical of many frogs is created by yellow pigment layered over gray cells, which in turn makes the frog look green to human eyes. In some cases, the yellow pigment is missing. And due to this genetic abnormality, the frog appears blue."

There is no blue pigment! ^^^. The frog only appears blue because some other pigment is missing. I think that's what's going on with my blue anery concinnus. I have discovered that when very cold (brumating) the blue coloration of my snakes disappears. When warmed back up, they first appear greenish, and only when they are very warm, do they appear blue. Also, the light source has a great influence on how blue they appear. Interesting. Read this:

Rare Blue Frog Struts its Stuff at NHM - Humboldt State Now

I think something similar is going on here with these T.s. concinnus'. I believe there is no blue pigment, there is only the lack of some other pigment.



(also see my avatar)