Yep, after testing it again I can confirm the frame is drawn before the grub menu is presented (or when timeout=0). With the negation this does not happen: background is continuous on one or other color, the right thing (tm).
Yep, after testing it again I can confirm the frame is drawn before the grub menu is presented (or when timeout=0). With the negation this does not happen: background is continuous on one or other color, the right thing (tm).