You can change the Start menu to any custom color you want, but that will, by default, change the Taskbar to the same color.

I just realized today that some of my pinned websites no longer opened on my Taskbar, so I went to repin them and found I was unable to re-pin them to my Taskbar or Start Menu. I tried doing a repair ...

Microsoft has started rolling out Windows 11’s revamped Start menu, featuring grid and category views, a bigger "All apps" ...