2008?
Times have changed far too much for me to answer such an old poll.
In my snake room I live in the here and now with remote controlled LED bulbs that can be any number of colors. I have a three bulb lamp in the corner of my snake room with a two bulbs on a timer. I like one of the darker blues as it gives the most night like feel IMHO. These bulbs can be bought cheap on Amazon.
Now if heat is needed I like the blue the most for appearance but I swear they burn out twice as fast so I stick with red.