Wonder is described as a "sheer mandarin orange with pink and gold shimmer." It's a medium, warm-toned orange with barely-there pink and gold shimmer. It's semi-opaque--not at all sheer--but settles slightly into lip lines. The color wore well for five hours, which is longer than many other shades in the range. MAC Riviera Life (LE, $15.00) is darker, more shimmery. MAC Morange (LE, $15.00) is more opaque. MAC Eclectic Edge (LE, $15.00) is more shimmery. Guerlain Tangerine Vlam (P, $30.00) is similar. See comparison swatches / view dupes.
FURTHER READING: Formula Overview, which is a detailed review of the range as a whole.