Interrogation in a log cabin movie

Help! I saw a movie where two guys are in a log cabin and it turns out that one of the guys is an interrogator who gets his companion to confess to something. The cabin then fades away and the confessee gets sentenced. I remeber something about the end, the guilty cannot interact with people as people only see them as colours. Blue or Red. Make sense to anyone? Lol! I hope someone can help! Thanks!