Need help with LED mod

Okay i got four led red,green,yellow, and blue the are 5mm. Can anyone tell me what type of resisitor i need. These are going to be connected to the power pack. It is a wireless controller. So far i one led working a white one for the 360 button hooked up to the rumble pack. I also think i just burned out a controller boared it does not work with the battery pack of the chargable pack on works when connected to the 360..
Thank you.