from
to
or
made with PS 7
involving curves
-->two easy steps
I used
this image of the lovely Jayne Wisener.
1. Duplicate your base and set it to screen at about 50%
2. Create a new curves layer (layers/new adjustment layer/curves)
RGB
89/110
RED
59/99
166/192
GREEN
57/68
BLUE
216/195
And you're done!
And if you want something like this
You just need to take your result and follow
this tutorial.
Other icons made with this coloring (without the other tut):