NOTE: This may or may not work for you. But it doesn't hurt to look and see if you really want to do it.
-Standard Phillips Screwdriver
-Precision Screwdriver Set
-Vise Grip Pliers*
-4 Ultra High Brightness White (Or color of your choice) LEDs. These can be swapped for almost anything really. The brighter the better though.
-Resistors. Varies based on LEDs.
EDIT: Sorry for not having any before pictures. I took it apart before I knew I could replace them and then I just wanted to get it done.