Does anyone have any experience using Mapei grout in Rain? Installed Ann Sacks Savoy tile in Cornflower Blue on the floor of our guest bath, and I’m looking for a blue or blue-gray grout. Our contractor wants to use Mapei Flexcolor brand, and gave me the sample sticks to play with. The only color that seems to come close to what I want and isn’t too gray is Rain but I can’t seem to find too many examples of what it looks like IRL.