Disclaimer: I'm not J.K. Rowling. This means Harry Potter is not mine. Also I'm not making any money from this...

Blue.
Electric blue.
With glowing stars.
Oh Merlin! They are moving!
Don't look Harry. Don't look.
Concentrate.
Focus on the enemy.
How can I focus on the enemy while the stars are trying to hypnotize me?
Wait. They are not trying to hypnotize me, they want to blind me!
Better do something…
"Professor Dumbledore?"
"Yes, Harry?"
"Wouldn't it be better to wear a less dazzling robe?"
"I don't see why I should. It's perfect for the occasion."
"May I ask why?"
"Simple! It's distracting the enemy."
"Professor?"
"Yes?"
"It's distracting our allies too."
"I didn't realize it... Lemon drop?"