Color icons are objectively better than contrast icons for seeing quickly if something's turned on or not. Even the high contrast one I'd argue is harder to identfity than the color one at a glance.
Please give us the option to choose between color icons or contrast icons, not be forced into only using contrast.
Current color icons (top) vs the 2 new contrast icons (bottom):
Additionally, even if I wanted the high contrast one because it's easier to see, the rest of Premiere is so hard on my eyes with that really bright text so I wouldn't be able to use it long term.
I do appreciate you've managed to slim up that part of the UI however, so thank you for that.