Sirius could tell by the faint pink tinge to Remus' ears that the other boy was blushing, and he couldn't help laughing again. It was nice, making Remus blush. Felt... He couldn't even explain it in the safety of his own mind.
"Dark eyes," he said, pushing Remus' shirt up higher to get to his shoulders. "A nice navy liner maybe, or even black. You wouldn't need your lashes done, they're already ace, long and dark. Something dusky on the lids, I'd say, to bring out the green in your eyes. Your lips wouldn't need much, hint of gloss maybe..." He could already picture it, dressing Remus in some sinfully tight trousers, taking him to that muggle club he loved in London, dragging him onto the dancefloor... "He was suddenly very aware of the smooth expanse on Remus' back under his hands..."