Reason: Maroon was rude to Red for not letting him join him. So Red asked Orange to see if he can cook some extra steaks for Maroon. Then he put rat poison on the steak and waited for Maroon to eat the steak.
Oh man! All the clues lead to me!
Killer: Off White
Killed: Midnight
Midnight has no desciptions so he is a odd ball. He must have been jealous that I kill people for sacrafices so he killed off white. Also Off White disappred in the middle of Day 7.
Olivine only sacrifices people who are foolish. Off white is smart and nerdy. FYI