Murderer: Cyan
Victim: Lime
It mentioned that Cyan went in the lounge then left after a while so she tried to not leave fingerprints by wearing gloves and pushing Lime off the balcony. I hope I didn't lose.
Killed: Blue
Killer: Maroon
I can say this because they were the only two in the kitchen, so Blue was eating stuff, then he fell asleep, then Maroon murdered him, put him in the fridge, waiting for him to get frozen, then Maroon put him in the Annexe where Tan found him.
Killer: Olive
Killed: Poison
So, the trap wasn't there in lunch time, so I think it's Olive because she must've set the trap for poison, Poison was convinced to sit on the chair and Olive pressed the button under her chair then acid poured on Poison. I know it's Poison because the paper and leather pieces could potentially be used for magic.