Wren didn't know what 'garish' was, but he was sure it didn't matter - Archie was inviting him back to his home and Wren was both awed and honoured, as could be seen from the way his mouth dropped open for a good moment. "Oh my gosh, pajamas!" he said in a hushed voice, like anyone else who'd been offered gold. "Thank you so so much!" he swallowed the squeak that tried to escape his throat and hugged Archie's arm briefly, letting go so that he didn't make them both fall. The sweep of Archie's thumb over the soft insides of his wrist made Wren shiver in a way that was distantly familiar but that didn't feel oppressive or make his stomach twist.
As gregarious and extroverted as he seemed to be, and as he truly was one on one, Wren could be easily overwhelmed and made shy around a lot of people. The closest he'd come to being in a crowd in basically 18 years was 4 or 5 guards at Area 52 along with 3 scientists and another subject, and those memories were chopped up and pushed away somewhere in what was, for once, a mercy of his fritzing brain.
He still chewed at his thumbnail a little at hearing there would be someone else at the house, but he was sure he could handle one person, especially if they were related to Archie. "I eat grass and sometimes a bug or a little thing I can catch." he commented, like that was normal. "What's pizza? Is Eli your brother? What's a sleepover? Are you tired, Archie?" he asked, curious as the cat that died but was brought back by satisfaction until that last question where he was all soft but earnest concern.