My first impression of the Color Explosion palettes wasn't great--25 Pink Punch was a very neutral, unexplosive combination of colors with a forced luminizer. However, 05 Caffeine Rush was much better, though still neutral, because the luminizer was gold-toned, bringing out the warmth and depth of the neutral browns from day- to night-time wear.
20 Blue Blowout is the 3rd I've tried of the 5 Color Explosion palettes, and so far its pigmentation was the most impressive I've seen (worn with an eyeshadow primer), and is alongside 14 Forest Fury in terms of widest shade range offered in a single palette from this line. The silver-toned luminizer is suitable to the shades of blue in this palette, which include bright, sky and neon blues, a subtle shimmering denim blue, and a deep, bold, royal blue "liner" shade.
I usually hate the color blue but the pigmentation is so impressive and the texture of these eyeshadows is surprisingly silky, that this palette is a keeper and a must-have for those who love saturated blues. It's pricey at $8-$10 each, but I did get this at Ulta on clearance for $3 and it's among the greatest deals I've found for how great the product is.