Our designers suggest you consider grout colour 19 to enhance the green in the tile.
Go neutral with Colour 06 light grey.
Or contrast with a simple white.
Recommended Grout Joints - (We have assumed that your substrate has a perfectly flat and plumb surface, please check with your tiler.)
3mm grout joint. Based on this joint size, 1 bag of grout would cover 2.6m².