Our designer is set on Mapei Frost for the color for the grout in our bathroom (shower wall and floor tiles). Does Lacrite or Ardex have an equivalent color to Mapei Frost? Reason we want to go with Lacrite or Ardex is because we have been told their epoxy grouts are the best around for showers (and we are currently dealing with aftermath of a leak in the shower, so durability is key for us). Any thoughts on equivalent colors to frost or experiences with durability/stain resistance of epoxy grouts in showers would be much appreciated. Thx!