I have just recently found this blog called Stampin for the Weekend. Challenge No4 this week is Monocrome, to use varying shades of one colour. There are some gorgeous examples to see on the blog.
For my card I used a mixture of papers for the background, the stamped rose is a favourite, that has long lost its makers mark. As you can see green is a favourite colour of mine, the pale shades have photographed looking a bit beige, but they are a green in real life.
I also found another blog with a Monocrome challenge Stampin'B. via my friend Caz's blog.