I have painted my bedroom and now I need a duvet cover?

I am SICK of looking on line. They can’t be that hard to make even if it is striped which is what I am thinking. The paint looks different colors depending on the light and time of day. It is green in the AM, almost pale blue in evening and a combination of the 2 at night. (Benjamin Moore- essential sage)I am thinking brown or beige. Any suggestions out there?

I would go with a chocolate brown…looks good with pale blue and green.