Comment 6 for bug 781683

Ok, finally I got it working (grub2 didn't like the default wallpapers of ubuntu :-( - but my own picture were accepted).

The current theme related functionality of grub customizer is ok basically. The only problem is the button "copy to grub directory": the user mustn't click it when using this new version of grub to get both working (background image and colors). Also every existing image has to be removed from there.

The good news: the user doesn't have to decide if copying to grub directory is required or not anymore: the grub script automatically detects if this is required and caches the file itself. So I should remove this button when using this new version of grub.