In a city or contemporary scheme look for a smart roman blind in a stripe, this fabric could also be used as an upholstery fabric for a statement chair. Furniture could be glossy black, paint walls white and keep accessories to a minimum. This would create an urban contemporary scheme.
If you want a monochromatic scheme but favour a country style then look for toile de jouy designs. You can either keep this design for the curtain fabric or use the design as a wallpaper as well. In a bedroom use with crisp white bedlinen and pile the bed with cushions in made from toile de jouy and antique linen fabrics.
If you want to soften a monochromatic scheme then you could incorporate shades of grey into the colour scheme, for example this would be a good colour to use on the walls where white might seem to be too stark and clinical. However, there are also many shades of white so you could choose a softer white rather than a brilliant one.