I've chosen Damas stone ( light stone effect) Karndean for my kitchen and utility room and am now having difficulty choosing the fake grout strips to border each tile. If anyone out there has Damas stone which grout strips did you choose? I don't want a very dark or obviously noticeable border so am considering DS12 (I think called concrete) but also have samples of DS10 (chalk), DS14 (stone) and DS15 (clay).