Ceramic bulbs are known to warm the animal and not the immediate surrounding, or something like that.
Red light, just plain red light, is less penetrating than green, blue, or violet (the most penetrating), hence why it is more soothing to the eyes, and hence why it is used in photo labs.
Now, Zoomed, if you look at their lighting products, does have red and infra-red lights, either suitable for night usage. They do say 24 hours, but anyone knows never to run electrical equip. 24/7.
Make sure the infra-red u have is suitable to use on your animal. At night there should not be UV lights or white lights, or whatever, because animals do need day/night times.
http://www.zoomed.com/html/lighting_home.php
As for dehydration, as long as you have fresh water available always, and the enclosure is humid, the animal will be fine.
The ambient temperature is a bit cooler at night than day, of course, and the animals know that.
If you can invest in a timer system, it would really be helpful for you.
If you have further questions, feel free to ask!
-IJ
p.s. black-lights, or pop-up-art lights, are still debated, and may not be suitable because they emit penetrating wave lenghts of light, hence why they are capable of iluminating bright colors in the dark. Plus, they don't last too long either.