My very clumsy DH appears to have knocked a glass of wine over and it went over our cream wall in our rental property! Obviously, when he did it last night he didn't think to tell me and clearly did a half-arsed wipe so now it's a lovely dried purple colour (how he thought I wouldn't see it is beyond me). It was an accident, but it's an accident I don't need right now. Any ideas how to remove? Sugar soap will take off the paint as well, won't it?