Why choose a yellow duvet cover? If you have a room that does not get a lot of light or is north facing and dull, the correct shade of yellow duvet set can give a glow to a room that imitates sunlight. A white or cream duvet cover will bring additional light into a bedroom on a dark winters’ day, compared with other darker colours, but the cool light it reflects will also reflect the weather outside. However, if you look at a yellow duvet in the same room on the same dull day, you will see how the yellow colour changes the reflected light to a glow reminiscent of a sunny day, bringing warm tones to the room similar to the way buttercups reflect sunlight. This is why we have named our yellow and white check duvet cover set Buttercup Yellow for the glow it gives a room even on a rainy day.