"Then we will choose the gray for now, save the blues for later."

He repacks the blue ones, chooses more basic pins to secure the one they have settled on - even with the amount of practice that he has had so far, he is not quite fully able to get the drape 'right' given his wings, even with them concealed via the spell from the amulet. He will need help, once she is finished with her own.

(This also gives him time to watch her dress - which he appreciates, even in a non-sexual way.)