Shed Details:

The shed is color selectable BEFORE placing. After it has been placed, there are 2 triggers to change other options. 

In the shed are 2 electrical panels in the same corner. You'll see warning stripes on the floor. These 2 triggers change the trim color 
from white to black, and the lower metal siding color from light to dark. 

Credit to Elk Mountain Modding for the snow mask.
