In my guest bedroom which is one of my favorite rooms in my house, I have a white matelasse coverlet and 2 large scalloped matching Euro Pillows, then from there I can add fun pillows, blanket or duvet folded at the foot of the bed. This is another way to update a room but keep existing duvet you have and work around it.
Here the white matelasse coverlet is used with the folded duvet at the foot of the bed by Katie Rosenfeld Design
Colored matelasse with printed duvet at foot of the bed from Tobi Fairley
Another example of printed duvet folded at the bottom so the print is not as overpowering from Coastal Living