When defining floating menu item background properties, it will not honor reset colors. By default, the gradient uses Background Color 1 & 2; if Color 3 and/or Color 4 are used and then reset, the gradient still uses last known color(s). I see no workaround beyond recreating the menu item.
Device information:
- Macbook Air M1, 2020
- Sequoia 15.5
- v5.497