Our footstool needs reupholstering. I've found a chap to do it, but I'm super stuck for colour ideas. We have a light grey sofa and common sense would say to have the footstool in the same colour, but we also have a messy toddler who loves smearing yoghurt / fruit / insert other grossness here, so I'm wondering if a darker colour might work. For reference, the walls are a very very light blue, and we have a big deep pile rug with blues and dark greens in it, with tiny spots of yellow through it. Any thoughts on what won't look crappy?