Step 1 examine the tiles for thickness and color.
Marble color change thinset.
Most of the tile was white but there were some gray in the lot.
What color thinset does he she use.
It is common for marble to change color as the cement dries and cures.
I hear it quite often dark grout can sometimes seep into the sides of a light marble and stain it causing it to look dingy overall.
Often the choice of thinset color simply comes down to the grout color selection.
Give it a few days it will turn back to the dry color.
I am not sure why white thinset was not used nor did i even think to ask.
When you combine that with the color change it looks like you intensionally picked a different color for the bottom row to create a border between the large vein marble squares above and the multi colored small tile on the floor.
If the tiles arent from the same lot the likely hood of a match decreases.
My vote is white it will keep the marble looking pristine and will darken a bit over time matching the look of natural carrara quite well.
The dark color on the marble was definitely moisture as it has lightened quite a bit.
I remember doing a carerra repair in a shower a few years back.
For instance different kinds of.
How long do you let it dry out after it is installed.
For instance if you are installing granite tiles and have selected a gray toned grout color gray thinset is a good choice for installation.
I guess i will never know how much the grey thinset affects the overall color.
If the thinset shows through the grout it will be less noticeable.
What type of thinset to use when installing marble tile.
Light weight thinset such as merlite 820 is less likely to sag if used properly.
When installing tile in your home you can use a variety of products to adhere the tile to the substrate.
For most installations a modified thinset such as the 703 or 710 is recommended.
I noticed that the bottom row if tile are not full size tile.
Definitely stay with a lighter color for marble.
I see ditra around the niche you planning on running ditra in the east of the shower.
Jack nov 28 13 at 23 37.
White thinset is always used on light colored marble you used the right stuff.
For rectangular plank tile use a medium bed mortar such as 720 marble pro.