Have you taken a look at the NZXT 2 meter (also comes in 1 meter) LED strips? They come in different colors, are pretty inexpensive, and have brightness and power controls.

Go ahead! This is my very first ever build, that I came up with after looking at websites and getting some advice from some people over at Tom's Hardware. :)

Here are red lights to go with it! http://www.amazon.com/NZXT-CB-LED20-RD-2-Metres-Sensitivity-Sleeved/dp/B0046Y1622/ref=sr_1_1?ie=UTF8&qid=1408722405&sr=8-1&keywords=pc+led+red