Three colors to rule them all.
To perfect this look:
Begin by using a thin black eyeliner under the eye, right along the under eyelid.
Next, do a smudged line of orange under one third of the eye, then do a light blue with the next third.
Finally, do a bright yellow for the last third of the under eye.
Follow the same pattern with the same three colors of mascara to really make this look pop.