Rhythm is a magenta-fuchsia with fine shimmer and sparkle. It mostly tints the lips pink and adds some sparkle. I can see this working well as a quick and easy go-to gloss during the summer. The shimmer is very fine but still has a lot of sparkle. This shade wore well for four hours. MAC Astral is more opaque. Benefit Kiss You is similar in color but not shimmery. Burberry Hibiscus is darker, less shimmer. Bobbi Brown Electric Violet is cooler-toned. MAC Aleydis is cooler-toned, more fuchsia. Urban Decay Jilted is similar but has fuchsia shimmer.