Made In Photoshop 7
4 easy steps
Uses: Selective Color
[ EDITED ]
1. First, resize or crop your base layer to 100 x 100 pixels, because it is the actual size you need for the icon.
It should be like this:
You can choose whether to sharpen or blur etc. your icon base, its up to you =]
2. Duplicate the base layer. Set the duplicated base layer to Screen. Now set the layer's opacity at 40%
It should look like this:
3. Next, Go to Layer > New Adjustment Layer and create a Selective Colour Layer with the following settings:
Reds:
Cyan -68
Magenta +11
Yellow +29 -29
Black +0
Yellows
Cyan -76
Magenta 0
Yellow -34
Black -16
Neutrals
Cyan 0
Magenta 0
Yellow 0
Black -20
The layer should now look something like this:
4. Now, do another Selective Colour layer again
Just by going again Layer > New Adjustment Layer and create a Selective Colour Layer with the following settings:
Reds:
Cyan -100
Magenta 0
Yellow +100
Black 0
Yellows
Cyan -83
Magenta 0
Yellow 0
Black 0
Neutrals
Cyan +21
Magenta -41
Yellow -43
Black 0
And now it should finally look like this...
Here are some other icon examples of this tutorial -
Please credit me if this has tutorial helped you, and dont claim it as your own =]