I really like Cursor Effects, as it’s free and easily found in Apple’s App Store. It’s a breeze to set up and use, and you can enable and disable it with a keyboard shortcut.  Aside from that, the only other way to customize mouse settings on a Mac is through terminal shortcuts, though these changes are risky for anyone who doesn’t know their way around Terminal, and it’s not all that straightforward to change it back if you end up disliking it. My preference is to let the application do the heavy lifting.

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How to highlight the mouse cursor on macOS

  1. In the Mac app store, search Cursor Effects.
  2. Click Get to download the app.
  3. Click Install to install the app.
  4. Click on the Cursor Effects icon added to the menu bar.  5) Click Apply to select one of the cursor options available for free.
  5. Click close when done with the selection or click exit to quit the app.
  6. You can select Launch at login so that you can find it on the menu bar anytime you need it.