Sure, the lipstick shade options on makeup counters are seemingly endless, but there is still room for more! We crave wild rainbow lip shades [1], multichromatic hues, and luminous metallics [2]. So far, the only way we've been able to obtain these tints was through custom blending [3]. It seems we're not the only mad scientists mixing up bespoke lipsticks! The masters behind MAC Cosmetics totally understand this quirky behavior, which is why they've started the MAC Mix + Mash initiative.

The brand declared the challenge in a post on Instagram [4]. Here's how it works: just invent your own lipstick shade by creating a mashup with your favorite colors. "Share it by using #MACMixMash and let us know the products you used," the caption read. "We'll be posting some of the genius color concoctions on our social channels!"

While we're uncertain if MAC will end up producing any of the best makeup masterpieces, we're using the Instagram images as inspiration. Read on to see some of the most dazzling creations.