Tutorial #6
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Made in PSP9, probably translatable.
Other examples:

Grab your base. Do not sharpen, soften, etc. until the end. 
Create a new Channel Mixer layer. Match your settings to mine: (Monochrome is unchecked on all of them)
Red: 76, 12, -12, constant: 3
Green: -37, 119, 12, constant: -8
Blue: 21, -24, 87, constant: 8
Set this layer to Saturation (Legacy) or Saturation.
Create a new Color Balance layer.
Shadows: -100, 17, -6
Midtones: -100, -100, 14
Highlights: 21, 11, -4
Preserve Luminanace is checked. 
To get the other effect, just add a new layer, fill with #f8b922 and set to Soft Light.
If it's a bit dark, duplicating the base and setting that to screen will really help.
Sharpen, soften, add decor, etc. and/or you're finished! :)

Be sure to mess with the opacities on the layers to get the effects you like the most! Remember, this doesn't work for every icon.
Other examples:

I'd love to see what you have made! :D
