It's either the light of the Jedi's blade or Cayde's eyes seeming to brighten at the sight, but either way he's definitely had his interest captured in that moment. He immediately hops up from the bed, snap-pointing with both hands.

"Yeah, yeah!! Just like that! His was red though. Had a funky little crosspiece and crackled a lot more, but it got the job done." He folds an arm across his chest, his other hand stoking his metal jaw as he studied Obi-Wan's blade. "Think I like yours better. Nice color." And it didn't sound like it was straining against its housing.