New to this fourm.
Welcome.
Do all the GTP change to green regardless of the starting color?
No.
A pet store was telling me he had a GTP that was yellow and it would stay yellow. He then told me all of the colored GTP would change to green unless you invest in the genetics that would keep the color (red, yellow, or orange).
They are correct. Some bloodlines will stay yellow as adults. When designer genetics come into play, there are many many different looks that can be acquired......yellow, blue, black, ect. Here are a few examples:
Captive Bred '03

Captive Bred '03

Captive Bred '04

Captive Bred '06

Captive Bred '06

Captive Bred '06

Captive Bred '06

Captive Bred '06

sorry for the small pic.
Import 2002

There are many other fine examples in other collections. Some that are solid blue and some nearly solid black. I can almost guarantee you will not get these results by purchasing import captive hatched babies.....99.999999% The bloodline is key and price can reflect that.
Enjoy.
Brandon Osborne
Are GTP the same thing as Chondro (not sure of the spelling)?
Yes. GTP and Chondro are the same thing.
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www.brandonosbornereptiles.com