I believe that Turquoise was the murderer of Vermillion, and here's why:
As we know, Turquoise was laughing evily but we don't know why, and once Maroon and Navy heard Turquoise they followed her, but they didn't know the events beforehand.
Turquoise then made two bombs, a fake and a real one. Since she was evil and her job was killing she knew how to make a bomb. After crafting the bombs, she grabbed her "Killing Briefcase" and went to make a kill. She had made a Bomb Detonator and defusor as well as the bombs, put them in her case, and went off to kill Vermillion. She went to spy on Vermillion, who was in his bedroom writing notes to himself. Turquoise saw one and it said "Go to the Library later to discuss Rice's friendship." So she snuck into the library and hid in the Studying Room, the closest she could get to Vermillion without disturbing him. After Rice and Vermillion's chat, Rice went back to his room for a nap and Vermillion went to the Indoor Garden. Turquoise, however, got there five minutes before Vermillion. It was enough time to set up the less powerful fake bomb and a lot more powerful real bomb under one of the benches in the garden. She then hid in the Lounge on the First Floor and looked out it's peephole, and when Vermillion came to the indoor garden, he saw a note in red ink and a defusor and the note said to hold onto the defusor or you will die. Vermillion looked confused, but then the fake bomb was detonated and it blew up the bathrooms comepletely, diverting Vermillion's attention away from the real bomb. Then, Turquoise detonated the real bomb and it exploded, charing a lot of Vermillion's skin and sending him flying across the garden into a wall, killing him with one bash. Once he was dead, Turquoise took the defusor and hid it in the Library and went off like nothing had happened, but then she started laughing evily, and Maroon and Navy spied on her while she did so.
That is why I think Turquoise's evil laugh was because of her kill.
T. Cobalt, i'm sorry about how you lost your brother, but he killed nine people! Luckily, you have friends like me, Hot Magenta, and White, and we'll make sure you are going to live!
What i'm talking about is how you are playing in this camp as yourself and you'll know the best joke or best marble race to make, so I think it should be fair if you put SB up for resignups.