Our design team suggest you use grout colour 32 Peach Beige to compliment the amber shade of the tile.
Kerakoll Fugabella Color Grout 32 Peach Beige 3Kg – Baked Tiles
Alternatively you could use grout colour 44 Greige to highlight the shape of the tile in a subtle, lighter shade.
Kerakoll Fugabella Color Grout 44 Greige 3Kg – Baked Tiles
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 5m².