Honestly, cutting the yarn scares me. There's such a finality to it - I'm still at the point where if I feel like I've messed up my knit and I'm not that far along, I just unravel it all.
So...with that in mind, have you guys seen this before?
I'm guessing she just added the color by doing this:
How well would this work? From the way she added the color, I'd be afraid the tail would come off and the knit would unravel.