Love the purple walls (I can't find the source of this image which is mighty annoying) I love the color scheme but rather in a bedroom or living room. Dark purple walls, gray wainscot, white ceiling and marble gray floor. Metal or silver details.
DIY:: Stairs- painted tops and bead board facing Tutorial - this is a good idea! But instead of the bead board we could use old tin or barn wood! Or use tin where the bead board is and replace the tops with barn wood!