I don't know how well you like to work with minky or cuddle fabric but I did a rag quilt with two colors.

There is this kit that you could change out the animal https://www.missouriquiltco.com/shop...irl-cuddle-kit



There is this one that you might be able to add some grey. It has lots of forest animals but is in bright colors https://www.missouriquiltco.com/shop/browse/3397

https://www.missouriquiltco.com/shop...es-white-panel