[His expression falters for a moment - a reminder that he's different now, before he fixes it up into a cocky smirk that didn't quite reach his eyes]

Something like "Did you blindfold yourself before you picked your outfit?"

[He gives a hum at the sight - either there is a passage, or other people had the same thought and were left disappointed. Harlock eventually moves back down, and approaches the portrait, his hands moving along the frame]