Woops, sorry.
Okay, a glass tank is a fish tank and they are not easy to hold heat and humidity. It's a juggling act at best and takes a lot of tweaking to get right.

This is a reptile cage: http://www.reptilebasics.com/2x3-Cag...h-p-16286.html and it will hold you ball python for his whole life! These cages hold heat and humidity really well and are made to house reptiles They are super easy to clean and I am really sold on the radiant heat panels for the heat source; I really think they are much more aligned with a natural way of heating (the sun!)

Going into blue, or going opaque, simply means that the eyes of the snake have changed color (or are changing color); one indication of being in the shed cycle

Hope this clears up the confusion I caused!