What is he wearing? Well, it's Carnival. Evidently he's more aggressively artistically inclined than Enjolras had realized. Well, okay, have fun with that, Sinric! Enjolras is generally bemused by that kind of thing, but he doesn't judge.

"Of course," he says, with a welcoming gesture.

Sinric's French is archaic, heavily accented with what might be centuries and regions rather than any foreignness (though of course it might be that too, for all Enjolras knows); it's comprehensible, though.

"You speak French? I'm glad. I'm much better at reading Latin and Greek than speaking them, I'm afraid. But I'd be happy to try if it's easier for you."