hi,a all i,m just about finished doing my led conversion in my 56 plate astra and its looking pretty goooooodd . i,ve come to do the heater control unit and to light up the 3 knobs i used plcc 4 leg leds but when i turn on my lights every thing lights up blue but the 3 knobs look a lot duller then the others is this how there supposed to look?in my cd/radio i used plcc 2 leg leds and the same in my clocks. any help or advise would be great thanks very much.