Createx is generally a bit cheaper than the Faskolor, and it has some different colors. You can find it at most art stores. As said before... use autoair, not the other stuff.
The window tint is nasty stuff. It's probably leftover military chemicals from vietnam. I would never touch that stuff again. I ruined a good body about 3 years ago with that stuff. ...nasty nasty stuff.
You spray it on, and it bloches, no matter how clean you get the windows.. then you spray a little more to get rid of the bloches and it runs. Then it stinks worse than most paints if used... It's just aweful.
-Troy