Lost the on-screen visual intent of displaying "out-of-gamut" colors.

I won't go into details on why I want this preference back, so I'll just keep this shorter by asking: For some reason I lost my ability to apply "out of gamut" colors to my images I want viewed on my monitor. I figured it was a preference somewhere, but I can't find anything to solve the problem, and I don't know why I lost this ability. I'll pick a sharp color to display an item on my monitor, and when applied to my image it is now automatically changed to the closest "in-gamut" color. I don't know what I did to change it to this, but I would like to get this capability back. (working with cymk on aics)
thanks for your help