Theo heard the murmur of Draco's voice filtering over the French language like English was a foreign tongue to his and it was soothing, something that had him relaxing a little himself. He propped his chin in his hand and studied the clothe samples that surrounded him, watched with plain curiosity at the people who came and went and never seemed to notice him sitting there; he was good at being quiet and unnoticed to the point where sometimes he forgot that he didn't have to be.
Some of his attention was always focused on his friend in the same way that some of it was always focused on his surroundings, his hypervigilance not something that ever really ebbed away. Even now, sitting there looking like he could fall asleep he still had his wand in easy reach and that wasn't counting his draw speed, something he'd practised until he could have it in his hand and ready to cast before the second syllable in Avada Kadavra was uttered.
Reflexes were just uncontrolled dangers without restraint though, and Theo again had learned enough to be able to hold his hand if he needed to, although startling him was never a good idea. He looked up as Draco approached and then eyed the tailor uncomfortably as the man requested his coat, only standing to shed it and hand it over because Draco had indicated for him to do so. Theo's trust was given with difficulty, earned through hardship and demonstration, and it was only won once because it never healed after breaking; needless to say, Draco had earned it and never broken it and Theo had even begun to stop adding 'yet' to the end of that sentence.
He took a seat next to the other blond, shifting uncomfortably and feeling bare sans his coat, before turning his attention to the book that Draco had, his interest in them almost Ravenclaw in manner. "I'm colourblind, you know that, right?" he said teasingly. He wasn't but he didn't really have an eye for fashion either, as was evidenced in his wardrobe.