increase nominally and the details around the firebox will need to be readdressed.
for a nominal fee. It is well worth the 75-150 dollars that you will pay...the results will be stunning! Gray is a good start however, as you mentioned which one? If anyone tries to answer this question online, they are doing you a disservice.
For a nominal fee, they will also cut tiles in half so you can make a border out of a different color/print. I did a solid green in the kitchen with a yellow printed 1/2 tile border. It's a ton of fun creating the designs too and when you get tired of it, switch it around, put them in a different room
x 6" (nominal)
Here is another way to calculate it: A bathtub is usually about 750 mm wide. You can count 5 tiles above the tub. 750 mm : 5 tiles = 150 mm
So the size of the tiles is most likely 150 mm x 150 mm (6" x 6")
If you have any further questions or if you need any advise, we will