Each color is on its own channel so I can control the temp. As far as knowing what it is its kinda guess work. I just watch the reflected light on the wall and try and get it to a nice blue and violet mix.
So ... I'm curious about this dimmer on the PC PSU. What happens if you lose an LED in the array? Is anything in parallel? or just series? It seems like if you have any parallel circuit it would cause problems.
That is the reason most people use a constant current driver rather than a PSU like this. I'm just interested to understand how you manage LEDs going out. I am also not sure of the wiring method on those LED panels and if any of it is in parallel.