Duvet covers are a popular choice in custom bedding. They can easily be fabricated as a reversible cover that you can use on either side in your bedroom.
Make sure you have a dust ruffle that will coordinate with the fabric on both sides of the duvet cover.
Top that with window valances and curtains fabricated in one or both fabrics on the duvet or in the same fabric as your dust ruffle and you can easily give your room a subtle alternating look each day!