I have a problem in several games, I recently bought an RX 570, before buying it I had no such problem.
Whenever I start league of legends it goes BLACK and WHITE, only the game, if I minimize the rest of the apps are colored normally, but the game goes black and white and when I take a screenshot it gets colored, so I think The problem is some configuration on the video card, my monitor is new, I have already tested a display port cable and an hdmi cable and did not solve.