Its quite possible that these bulbs are not providing the range
of light that chameleons need....can't be sure without knowing
more details about the actual blubs. The following article might
help you figure out whether they are good enough or not.
Go to...
http://www.chameleonnews.com/
Click on "article reference" in the header at the top of the
page.
Go to "GENERAL HUSBANDRY (Housing, Lighting, Captive Management)"
under which you will find "Lighting form Chameleons - Part #1"
and click on it.
As for using carpet as a substrate....I'm not a big fan of
it...in fact with most chameleons, I don't use any substrate.
I would much rather place something under the cage to make it
look nice. (The floors of my cages are glass.) IMHO, carpet is
hard to keep clean and free of germs. Just my two cents worth.