Step 1
http://www.gfxvoid.com/tutorials/1/toningdown/2.gif
Once your done creating your image, Save Optimized As with the above settings. Adjust the number of colors to your liking. Press done
Final Products
Back2Back Images:
http://www.gfxvoid.com/tutorials/1/toningdown/4.gif http://www.gfxvoid.com/tutorials/1/toningdown/5.gif
Image Copyright Guardian Aero, and was not created by me.