Yah, industrial sharpie red. Took more time to unbolt the rotors then it did to fill it all in evenly. Look anodized when you're done. Hasnt wore off either after nearly a year. They have been wet, muddy, stupidly hot. It's sticking really well.

 Did you just sharpie the middle of of your rotor or something? Looks prety cool

 Dude, this is a beast bike