As for color, I could say I've got the set (black shirt [minus the collar], black pants and glasses), but it's stupid to wear that kinda clothing here, too much heat. I'm not too sure, but this seems more like a "fashion topic" or something to do with clothing, not so much as of type-moon stuff. Anyway, I think it's pretty easy to get something like that, long-sleeved black shirts are somewhat common I guess, and black cotton pants too. Have you tried a "GUESS" store (or whatever it's named)? There is another brand, but I just can't remember it, something that starts with a D, "Dokers" or something like that. I usually just go with jeans and a common shirt, so I wouldn't know much about clothing.
Just go to some of those stores, ask for a plain cotton long-sleeved black shirt and some black pants of the same fabric, with just a bit o' luck you can get some black shoes too, the glasses... well that depends on the crappiness of your eyesight
"I settled for that shriek. Those dull vacant eyes... oiled cabbage stench of her...! [...] You know what? I'm sorry if I'm not gonna do this the way you want me to or the way you might. But I will not make an angel out of someone who wasn't an angel...!" -Chief Tyrol, on his beloved wife.
Have you heard about the saying that goes something like "drunk people and kids tell no lies"? Well, that's just a fallacy.