We are renovating our guest bedroom. It has angle walls and even if it has 3 windows, it is a dark room as we are surrounded by lots of trees.
Dimensions are: 12 x 13 feet.

We have natural color oak floors.
The bed is Flou design, Nathalie model, which is contemporary, navy blue color and it will have a flower pattern for the duvet cover with many colors.

We would like to make it a bright and cozy bedroom. Which colors should we use to get this feeling and on which walls?

Thank you!