Soft furnishings are a quick and easy way to change or update the colour scheme of a room. It could be the simplest thing- a drape around the window, a throw over a sofa and some new cushionswill do the trick in next to no time.
There are of course some more complex soft furnishing projects where the wide choice of fabrics available will make it possible to change to a new colour scheme at a fraction of the cost of buying ready made items.