Just cleaned some Amazonite crystals (for 3 months in acid!) and decided to do a Pikes Peak Batholith locale/zone side by side comparison of color. I don't think I'll get all the iron oxide staining out of the crystals, these are now probably as clean as they will get.
Amazonite is crystallized form of feldspar microcline. Usually microcline is pinkish color but with Lead (Pb) available during formation it takes on the green color. There are a couple of examples of white capping and white striping (inclusion of orthoclase) which is highly sought. Amazonite and Smoky Quartz combos are also highly sought and valuable. There are a couple of combos in the center of the picture from the Lake George area.
You can see that the darkest (most desirable) color is from the Lake George area in Teller County. The few pieces I have from the Wigwam district in Jefferson County are lighter green but have fantastic crystal formations. The Devils Head variety is more bluish and definitely paler. I have some from the Pine Creek area which is more green than Devils Head but still paler than Lake George.
For this study (which are the only locations I've dug), below is the map with color coded stars to point to the areas I'm finding the different color of Amazonite. There are plenty of other Amazonite bearing areas that I still have not explored yet...Harris Park area in Park County and Pikes Peak area in El Paso county and several others. If you have experience with any Amazonite locations I would love to hear from you!