I initially started looking at colours on the Internet using this website. I searched for browns and thought these would be suitable for our film palette:
Using images taken either by myself or from the Internet, one for the environment, one for the Mongolian and one for the Marmot:
This final one is one I made by hand using different images or materials I have found. As I am partly colour blind I find it easier to create things this way rather than using the colour palettes on the computer and enjoy being more creative.