From This:
to this:
Made in Photoshop CS2
No curves, just color layers
1 Layer Duplicate the base, and set it to screen, opacity 100%
2 Layer New Layer 001e47, Exclusion 60%.
3 Layer New Layer ffecb2, Multiply 100%.
4 Layer New Layer a9dcff, Color Burn 100%.
5 Layer New Layer ffcff8, Soft Light 30%
6 Layer Duplicate the base, and set it to soft light, opacity 100%. Drag it to the top.
And your done!
other icons done on the basis of this tutorial