...ever notice that the outlines of the color stripes in Celestia's hair are ALWAYS the same shape as one of the edges of her hair, on every frame?
When I realized what they were actually doing, I was like "BUT THAT'S BLOODY SIMPLE" XD I thought they were doing something a lot more tricksy than just five copies of the same shape, under a mask the same shape.
(And yes, I actually bought a copy of Chank Woodrow font just for messin' with stuff like this.
[EDIT]: Added the color ramp to the outline. Whee!
[EDIT AGAIN]: Shape hints! THEY WORKED. That's weird.
[EDIT 3]: Yellow gradient overlay under the mask