Getting delivery of white on white MX soon. Have two forward facing car seats and booster seat to place in second row of the new fold flat seven seater. Looking at the Brica Munchkin Seat Guardian to protect the seats under those car seats and booster. Kids eat and drink in the car all the time. Just wondering if anyone have had good or bad reviews of that particular seat protector such as color staining on the ultra white seats or difficulty installing, etc.