Did you buy the paint pen at the dealership?..how much?...I have couple little rock chips I wouldn't mind touching up (I'm a little OCD when it comes to my cars).I Used Lexus Paint Pen (one Side Has Base Paint In It And Other Side Has Clear) Works Well. Each End Has A Felt Tip. A Little Tip Is To Use Matches For Touch Ups!
Good Luck
Torsten
Sorry About Caps