I like the green color, it goes really well on the home screen, but on oxygenOS it is unusable as a system accent color because the text and overlays that are on top of the color are white. it is very hard to see what the icons in the notification shade actually mean if you use the Ratio color, #EBFF00. this is not a ratio problem, but it can be fixed by letting us change the accent color to whatever hex code we want. this way if my accent color in oxygenOS is blue I can set the launcher to the same hex code. then my quick settings will match my launcher, along with all the other Oneplus apps
It’s coming in the future. Please refer to roadmap.