I think thats madd cool and I was planning to do that also.
Like SumAccordGuy94 said you need small LEDs plus the resistors
and a soldering gun with a real fine tip for small electrincs. you might want to buy The LEDS and resistors online I don't have a website for you but i can find out or just search from a search engine. My friend wanted to change his Nokia phone to blue and wrote to this company saying he had a company, with a customer that wanted them and they sent him free lights so whatever works for you.