Eight shook her head at Inigo. "Eventually I'm going to have to. They do get longer. But I'm going to try not to or else we'll have Octotroopers everywhere." I mean, obviously. Who else didn't have hair that would become sentient when you cut it?

Oh, that's right! The whole point of changing her hair color was to change the color of ink. "Yes. I can make as much ink as I want, but it would take me some time. If you give me some jars I can make whatever color you ask for." Within reasonable limits.