- Open any object with a sprite editor in the Inspector
- Scroll down until you see a Swatch Color Reference script
- Check the Manual Swatches Update (it will uncheck immediately)
You should have fixed the issue, and they should have changed to the desired color. If it happens again in the future, repeat the process.
If you don't see the Manual Swatches Update checkbox, open the Swatch Tool Scripts by Konrad Kovács/Editor/CustomSpriteEditor.cs. Ensure the bool enableManualSwatchUpdate is set to true. Try the steps listed above.