Here's my application shell:
Style: Modern/Contemporary
Colours: #96b777 - #584d3a - #e0e03
Object: Shelves del Libro

I have all the Expansion Packs, and none of the Stuff Packs. (Patch version 1.63)

There is a tile of each required colour - as well as the bookcase - in the corner of the lot, for your convenience

Good luck to whoever receives this shell - I've tried to keep it simple as it's the first round!