Lady at the specialty tile shop: "Non, Madame Little. Do not seal ze tiles beforrre ze grouting. You must seal zem afterrr applying ze grout."
Moi: "Are you sure? The grout is black; I'm worried the grout will stain them!"
Lady: "Don't worrry Madame Little. Ze tiles will not stain. Follow ze Installation Guide" (points to a piece of paper). "Zeese tiles are verrrry spécial. You must follow ze guide. Now if you don't mind, I will feeneesh my lunch brrreak."
I followed the Installation Guide to ze letterrr, dammit. I got half way through the grouting and stopped. My tiles are so stained.
PICKLE Weasel to the rescue!