Hehe, I found a way to indirectly get readers >:]
He has olive skin, greenish-grey eyes,
Maybe the hair of this guy can be your inspiration (or maybe he can be your inspiration in general x3)
He can be wearing a school uniform sweater underneath a long-ended jacket (kind of like an overcoat), or just a uniform sweater (kind of like a Hogwarts uniform sweater) If it's the uniform sweater with the jacket, the uniform sweater can be a slightly lighter black than the jacket so that they don't blend together.
Also, he can be wearing a tie that's tucked into the uniform sweater. The tie can be either a dark green or dark red, I'm still deciding x3
The tie may be a dark green though. Whichever you prefer may look best :D
His pants are also black :D
Sorry if this is a little too much x3