MAC Opalesse Extra Dimension Eyeshadow ($21.00 for 0.07 oz.) is described as an "opalescent white with pink pearl." It's a pale white with an iridescent pearl shimmer/sheen. MAC Defiance is lighter. I also think MAC Pink Opal is similar but perhaps less metallic. MAC Ready to...

MAC Zestful Extra Dimension Eyeshadow ($21.00 for 0.07 oz.) is described as a "pale iridescent lime." It's an iridescent, pastel green with warm, golden-green sheen and a frosted, metallic finish. I don't have any real dupes for it; Too Faced Fantasy island is warmer, yellower...

MAC Extra Silver Extra Dimension Eyeshadow ($21.00 for 0.07 oz.) is described as a "true silver." It's a bright, metallic silver with neutral to neutral-warm undertones. Benefit Blingo is darker. Maybelline Silver Strike is a touch darker and more metallic. MAC Enlightening is...

MAC Dimensional Blue Extra Dimension Eyeshadow ($21.00 for 0.07 oz.) is described as a "frosty blue." It's a light-medium, cool-toned blue with a frosted finish--it is a little subdued, almost overcast in color. Bobbi Brown Iced Blue is lighter, more silvered. bareMinerals Bravo...

MAC Daydreaming Eyeshadow ($15.00 for 0.10 oz.) is described as a "frosted mid-tone coral [with a] veluxe pearl [finish]." It's a brightened, coral-red with a smooth, frosted sheen and warm, orange-y undertones. Guerlain Terra Azzurra #3 is lighter, less intense. Urban Decay...