Ok, im right here with my 24 inch imac screen res at low, and i cant stand it, i cant really see what im typing because my colorvision spyder2pro thing is on my screen, its asking me if the imac has a brightness setting or backlight setting or both. the imac says brightness, but could this mean backlight too? thats what it says in the program, so should i say that the imac has backlight, or say it has brightness, or it has both? also, can you control the kelvin and rgb stuff on the imac?