hello, the last mac I owned was a performa 6300… So maybe I’m wrong, but here it is :
Have you tried to change appearances settings in macOS preferences ? It may be following your own system rules.
a quick search on google says :
- Go to the Apple menu and go to “System Preferences”
- Choose the “General” preference panel.
- Near the top of the panel pulldown the menu next to “ Highlight color:” and pick the color to change to.
Tell me if it works !