I used a blue fleece that had ducks on it. The other layer is a blue cotton flannel with spots on it. The button-up hoodie and the pull-on pants are both reversible.
I would recommend this jacket pattern. It is easy to assemble and has a nice design with the large hood, pockets, and roomy fit.
I did not have enough fabric to even consider matching the duck patterns on the front but if you do use a large pattern that would be a good idea (definitely jacket, maybe not pants).