Dark Matter's eyes widen in mock surprise. "Really? I suppose in hindsight I did detect an air of elegance there that couldn't have come from anypony else in town that I know of. As for the grey filly..." He shakes his head in dismay. "She may be an earth pony, but down-to-earth is not something I would use to describe her. She seemed rather put out, even, that somepony would do that. I think she even went so far as to swear revenge."

Dark Matter shakes his head. "I'm afraid not. The last time I saw her was when I was leaving her house, and that was... perhaps three hours ago? Four? She could have boarded a train for Manehattan by now."

He sighs an inward sigh of relief. Rarity has been warned successfully, and he doesn't appear to have embarrassed himself by revealing how silly he was that he thought sending a vague, anonymous note was a good idea.

Now, how to gracefully make his exit?

"Well", he says, giving the sparse rack of capes a quick riff with his hoof, "I don't have any bits on me, and money is a little tight these days to be honest, but after seeing your work I believe I do know exactly where I will be buying my next cloak." He inclines his head to her. "It was a pleasure meeting you, Miss Rarity."

He turns to leave.

Dark Matter is taken aback when he feels, then sees the cloak on his back, but he decides not to question it. The world is so much a nicer place when ponies do nice things for each other. "As long as you do as well."

He has a nagging feeling that he's forgetting something, but he shrugs it off as he canters off, a spring in his step.