I'd say sugarberry, lemon drop, and key lime would be the best matches for Twilight.
You could try napalm for the yellow streak as well if you think it should be more yellow, but I think her streak is pretty pale.
For North Star, I think Fire Bird, any of the white dolly hair. I'm not too sure about her blue, most of the shades on Dollyhair are a bit more harsh than her streak.