There is a difference in colors and level of brightness on DX9 games when running on 12th generation processor graphics compared to older graphics.
When comparing the graphics displayed on Intel UHD Graphics 770 vs Intel UHD Graphics 750 on certain games such as The Witcher Enhanced Edition*, CS:GO*, and others, there might be a visible difference in colors and brightness.
Intel UHD Graphics 770 uses a mapping layer called DX9on12. This redirects DX9 calls to DirectX12. If you are having a severe impact in your gaming experience, contact Intel Customer Support and report the affected title.