Learn how to reduce the transparency in the menu bar and dock on the Mac.
You may have noticed that Apple as been making the interface to the Mac more transparent with each macOS version. It’s nice effect, but with some backgrounds, it can make some of the interface harder to read. Apple really bumped up the transparency in the menu bar in macOS Big Sur. If you do not like this transparency, you can reduce it, or basically remove it in both menu bar and dock. This is done through an accessibility option. See how to reduce or remove the transparency in this video for macOS.
Video Transcript (video also has closed captions):