I think I'm going to go this route afterall for the cheap/temporary solution. My gf insists and I'm starting to agree that it looks pretty good on the white wall as is, so I'm thinking just to add some contrast and screen definition (so I don't just have a blank wall), I'll paint it and frame it in black velvet tape or whatever that stuff is.
SIG STARTS HERE
2003 Audi A4 Avant, Black/black
3.0 V6, Sport, Manual
"Mods": all-round tint, 35% front, 20% rears; sedan sport rims; clear corners; yellow fogs; V1 hardwire/concealed display; XM Commander headliner install; emergency lights/radio; Pioneer AVH-P4000DVD with stock Bose system