Technic pack also has a bunch of other lights, with a couple dozen colors. I don't remember any details or if they require power of any sort, but they are there.
Edit: They're part of Redpower and take redstone signal to turn them on.
And now I've finally found a place to settle in the map I had previously been long-range travelling and looting in. Essentially I got bored of the looting after getting over a dozen diamond blocks and a practically infinite iron supply from the pirate airships. So now I can kick back on my mountain top place, put a music disk in the player, and long range snipe at creepers with my trusty musket (well, 2 muskets; 1 in the alchemy bag with the repair thing from EE, 1 in use, so as to keep them from breaking).
Also, if you see the colored ostrich-like things in technic, throw a saddle on them. They are excellent mounts. From what I can tell, blue colored ones are the best I've tried, with grey coming in second, purple, pink, and red after. They travel very fast, and can jump/double jump/triple jump, then glide for a very long distance. They even bounce/jump off water, so you aren't restricted to use on land. One of the most useful things I've come across lately, and makes exploring really easy.