I never said i go for plexi, that was someone else. I follow remco`s idea nearly complete. I got a mdf board and it just need a good primer and then paint it ,nothing more. I would also prefer a more grey tone and not white cause it can look washed out. With some more ambient light,a light grey is the best way to go i guess. Also i would not use a spraycan todo it, to "roll" it is way better cause you get the way better colours.