Enjoy Vision White Roller Blind from Blinds I've used shades like these from Bed BAth and beyond. THey are very functional and provide privacy and still allow light. We would need to check the width requirements.
Living room - decorated in soothing cream and stone shades, with just a hint of colour in the dress curtains. A window seat with hidden storage was added to the bay. Half-height shutters keep the light flowing in, while providing privacy from passers by.