In my beginner class, we are still working on darks and lights. Here is a white stag (photo Sweetie took around Yellowstone Park) in front of a dark wall. I painted this little painting (1/8 sheet = 7.5" x 11") and the students painted the little dark calf in front of a light wall (or in a light field).
For the wall, I used just 2 colors:
Cobalt Violet Deep + Quinacridone Burnt Orange
I used the same colors on the stag with a bit of Raw Sienna in the warm spots and on the antlers. And the grass was the wall color with Sap Green over it.