Hi ModNoob, Welcome to the new cyber-crack, Modding. There are many things you can do, so look around and make a plan. Visit the Galleries you can find at such places Voided Warranty, and read the reviews so you don't do like I did and buy the wrong things first. The reviews can point you to good stuff and alert you to crap, saving you big bucks. Good luck modding and post pics. ;D Here is a link to pulsing lights:
http://www.frozencpu.com/cgi-bin/frozencpu/ele-18.html It uses LEDs, so high intensity would be needed for case lighting. Since there are 4 LEDs possible, and they go in sequence, you could use different colors.