We are redoing our small front garden. The pathway is going to be done in black and white tiles. There is a patio area on the side and I wanted views on what would be preferable Kotah blue limestone or http://www.toppstiles.co.uk/tprod3252/Kotah-Blue-Limestone-Outdoor-Paving-300-x-600mm.html Mountain Green Slate http://www.toppstiles.co.uk/tprod3264/section970/Mountain-Green-Slate-Outdoor-Paving-300-x-600mm.html Thanks