Our design team suggest you use grout colour 45 Mink.
Recommended Grout Joints - (We have assumed that your substrate has a perfectly flat and plumb surface, please check with your tiler.)
For a traditional look - 5mm grout joint. Based on this joint size, 1 bag of grout would cover 10m².
For a contemporary look - 3mm grout joint. Based on this joint size, 1 bag of grout would cover 16m².