These should get ya started. Check out other manufacturer's on www.mouser.com as well.
Mouser Electronics: Kingbright - SMD LED Lamps
Mouser Electronics: Kingbright - SMD SUPERBRIGHT LED Lamps
DigiKey Corporation: LEDs - SMD
Mouser Electronics: Kingbright - SMD LED Lamps
Mouser Electronics: Kingbright - SMD SUPERBRIGHT LED Lamps
DigiKey Corporation: LEDs - SMD