I set custom colors for folder thumbnails, but I want to go back to the default. Is there a quick way todo this?
A "reset defaults" button might be nice here.
Resetting the Thumbnails page will also reset the settings in that dialog. But a button on the dialog to reset just those colors would make sense, I agree.
These are the defaults, and you can use the color dropper to grab them out of the screenshot:
The next update will have a Defaults button at the bottom left of that dialog.