Achieve this bright coloring in 4 easy steps.
Uses color balance and Hue/Saturation.
01. this is going to be my base.
02. Duplicate it and set it to hardlight 25.
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03. Duplicate your base, drag it to the top and set it to softlight 100.
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04. Make a new color balance:
midtones: -13 -4 +11
shadows: +5 -32 +2
highlights: +30 -11 0
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05. I added a hue/saturation layer to bring out the green & cyan colors.
master: +27
greens: +100
cyans: +100
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And you're done!!
this technique is used in
this icon post.