Then I actually realized what it was - temporary streaks compliments of oil pastels! For all you non-art school kiddos, oil pastels are like a little oily crayon, a popular medium for drawings and paintings.
So I pulled out my set of oil pastels, settled on a blue color and set to coloring my hair one evening.
So I played a bit more and ended up with this...
Hey, yah never know until you try though!
(And it surprisingly washes right out very easily, which I was sorta concerned about)