Clothe your naked. . .door?

Using curtain panels for a coset door is a great way to add color texture to your room.

(lifewithba.blogspot.com)

(mothering.com)

(jpmdesign.blogspot.com)

Use a curtain rod on the inside of the closet, as in the first picture, a tension rod on the inside of the door frame, as in the second picture, or use a regular curtain rod on the outside of the door frame as in the last picture.