Open an issue if the pattern to the function breaks on newer versions of Parsec, and if I have time I will get around to updating it for you, or feel free to go ahead and find it yourself.
This project was originally targeted at the 4:4:4 full color range feature included in Parsec Warp. It now provides free access to all features.
Multiple Displays in action (requires injection at least once on host for setup):
Before and after enabling 4:4:4 Color