I'm a bit clueless when it comes to decorating but I'm biting the bullet and doing my lounge. I'll be getting the walls painted, having new lights, curtains and rug, but won't be replacing the sofas or occasional furniture (sofa is plain dark brown leather and furniture is light oak) What I could do with is some kind of design tool where I can put in the existing bits and then mess around with different colour schemes/wall colours etc, is there such a thing?