https://docs.google.com/spreadsheets/d/1Z5h_RMkegeI0gQfa45xMNObz9hxuw4G03bHOu6Tv_OA/edit?usp=sharing
Go to format --> conditional formatting
Select the color you want to change
Under formatting style hit fill color, change the color, and save it.
Go to format --> conditional formatting
Select one of the assignment types already there.
Hit "+ another rule"
Change the words to the assignment type desired.
Change the color to the one you want
Hit done.