I can't be orange because its made of cheese.
Have you never seen cheddar? Most of that is orange, there is also that crummy American 'cheese', and fake cheese, like Velveeta or cheese wiz. lol
That said, I will make one more guess on who is the trap based on what we supposedly know...
If it is a student, as so many say, other than Eve's friends, the only one we have not seen at least partially nude, is the 'missing' student, Konterina! She is a student, has been in the game for a while now, and we have not seen her genitalia, only a bit of her personality (assuming the robot and the 'missing' girl are one in the same, and not just sharing a name, etc.).
So, unless it is a 'reverse' trap or not a real 'trap', Konterina is my hypothesis, can anyone break it yet? XD