M·A·C has brushed up our cheeks, and they're now helping us brush up on our math, with the new Hip + Happy = Alice + Olivia for M·A·C collaboration. Subtracting the pale pastels that were all the rage a month ago, M·A·C is packing a colorful punch with this new collection. The fluorescent yellow on the lips equation? They say correct! Balancing out these crazy colors, there's the Military Green and Morning After (light aqua) colors that have been added for a just-in-time-for-the-heat-wave collection. This summer let M·A·C be the teacher and you the student, you'll literally pass with flying colors.