Acid #10 is a neon, light-medium green with a matte finish. Unfortunately, the texture was dry and chalky, which meant the pigmentation was semi-sheer and less blendable. The color managed to stay on for about seven hours, but it also stained. MAC Wondergrass (LE, $15.00) is darker, more muted, shimmery. Illamasqua Fledgling (P) is much darker. See comparison swatches.