Super clever idea. I love how you're the uninvited guest at the party. The story is rich and interesting. The models and animations are fantastic - if you did those by hand congrats :)
I did have a lot of trouble figuring out how to actually progress. Could get the mask and then the guest colors and make it out to the hall no problem. Whenever I take an item from a guest, though, I lose my mask and get my face tased off - game over. Is there a trick to that?
I was also unable to activate the taser when I got it in the guard room. Was hoping to get a little revenge, but they got me every time.