Aha !!
now I now what the ATF is for
once again David if its a dedicated HT get it dark then even darker
Have you got a projector in there as this makes an awful lot of difference to what I`d recommend on the walls and ceiling.
tell us what you`ve got and I`m sure people will jump in with ideas
light bright paintwork will simply wash out the screen image trust me
I`ve done my screen wall. side walls and ceiling in the velvet out 2 mtr, then the rest of the room is done in a lovely dark Maraschino Mocha matt emulsion. The different its made to my pj image is amazing
Al