When my family moved into our house a couple of months ago, I assumed the tile grout was supposed to be a dark, nearly black color. Then I began to notice that in some areas of the house, the tile grout was more of a light gray color. Weird, right? Why would someone use so many different shades of grout in the same house, even in the same room? {Insert a lightbulb going off in my head here} I realized that the dark colored grout was in desperate ...