If you check the OP posts he mentioned that taskbar at 0% solid ie. transparency full, which mean no matter what color I set on the taskbar, it will be same as desktop. So even if I see taskbar at 19,19,19, it still nothing change on my system. BTW, this is on Windows 11 V23H2 OS Build 22631.3155.
Thank you,
Basj,
Stardock Community Assistant