Sorry about the unuual spelling; I am a Brit in his later seventies!
Relitively recently the original Nvidia card had to be replaced and the repair man loaded a HD4300/4500 adapter to my Dell MT560 desktop Windows 64 bit system. My minitor is Dell ST2210.
Just now I am trying to alter the colour settings, using Catalyst Control Centre. The documentation about Catalyst that I've managed to find is generic. (None was given by the repairer).
In the generic information it indicates that the individual RGB elements can be changed separately, but I am unable to find how this may be done.
I hope you will be able to help. Please!