He didn’t know what to think.
When he was younger, it had made him look foolish more than once. It had scared him, simply being there when he looked at mundane objects on his way to the bathroom at night.
On the other claw, it also seemed to fall just right to highlight how beautiful Rarity looked, every single time he saw her.
He decided that he would remain undecided on whether or not light was a good thing, giving his caretaker a definitive shrug before going back to sleep.
He was sure that Twilight’s evil smile was a trick.