Your great-grandchildren are calling it mid-century modern, you think of it as the stuff you junked just as your own children headed for high school. How you view these pieces will give away how old you really feel. These are times when we need bright design and cheerful colour in our lives, so perhaps some paint or a piece or two? But if Artex-stippled walls and woodchip wallpaper rear their ugly heads it is time to stage an intervention.