Incorporating all the gorgeous colors of the exotic bird, these peacock-like strands demand to be seen with their vibrant color palette, and look absolutely gorgeous on brown-haired beauties. Disclaimer: You may receive an insane amount of compliments.

Image via @liz.colors

Oil slick hair offers a playful way to show off your layered cut. The subtle shades act as highlights to emphasize the depth of the style.

Now you see them, now you don't. Rainbow highlights can be as subtle as you want them. Here, oil slick strands are hidden beneath her layers.

Is green not your best color out of the oil slick hair bunch? That's okay. Stick with hints of blue violet and red violet shades to achieve a minimal, yet statement-making oil slick style. The opposing colors beautifully complement each other against your already-dark strands without being too in your face.