Timeline thumbnail checkered background color setting

In some instances, the default checkered background in thumbnails makes it hard to read what’s going on.

Changing the checkered background color in settings applies to both thumbnails and the canvas, however I find that the default is good for the canvas but not for thumbnails.

It would be nice to be able to set the background color for transparency for thumbnails, separately.

I agree it would be a good option in the background preferences to change the thumbnail/previews for the frames. But if you don’t mind what it looks like too much you can change it in the background preferences to make the transparency grid squares look like one color or slightly lighter and darker than the default grid.