Start11 Can't get pure black option

Hi there,

So I am trying to get my taskbar and start menu to a more pure black, I thought i was able to do this on a previous version of the program.

For some reason, the best I can get is a darker grey color, not full black.

Any help would be greatly appreciated.

Also, what would I have to do to get, say, the file explorer windows customized? custom colors and such?

Any way, thanks a ton for any help provided!!