Gone are the days of a 3-piece suite of the same matching sofa, armchair and footstool all in the same coloured fabric. Having the same uniform colour across your whole room will actually dampen the space and make it look smaller. These are the rules of visualisation, having a lot of the same thing tricks the eye into thinking that there is more if it than there actually is. By breaking things up and having more contrast going on within the room is going to open up the space and make it look bigger.
A lot of the trends we see now, particularly in fashion and interior design, are trends that have come full circle, from when our parents are young, and made a reappearance into our homes again. We spend so much time talking about fabrics and textures and colours that we sometimes completely forget about leather.