CLP6C-FKB-CM1Q1H1BB7R3R3 looks hotter than the stock led:
915mcd Red, 1820mcd Green, 457.5mcd Blue
I imagine you could increase the resistance of the cathode to reduce the brightness if an issue.
Not surprising that some of the LEDs are burning out... the current Cathode resistors appear to be driving the full 20mA thru the LED dies.