Yeah, the Color settings have been moved although I find this less than useful because all this is supported directly by my flat panels. The one setting that no longer exists (at least I haven't been able to find it) is the Pixel Format setting.
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Yeah, it is not present for me with my current setup. I use an HDMI to DisplayPort up-converter. I have the 3DClub CAC-1070. Because I use an R9-290 which only supports HDMI 1.4 and which can not support 4k@60Hz. But it supports DisplayPort 1.2 which can utilize 4k@60Hz. I also do not use a normal monitor for gaming, I play via my living room 55 inch flat screen, which does not have an input for DisplayPort. So, either, Pixel Format doesn't appear for DisplayPort input. Or, because I have to have a custom resolution created in order to get 4k@60Hz in 8-bit Color Depth, which is the max supported for this HDMI-DisplayPort hook up, It's a limitation with converter itself.
So, if now you are wondering how I know Pixel Format still exists. All I have to do is disconnect my converter and then plug in the HDMI cable only, HDMI-HDMI. Pixel Format reappears.