Why does our new grout look discolored?
We had our bathroom finished in December. When we first had everything completed, the contractor warned us that the grout was wet (he ran the water in the shower to rinse everything) and not to get worried that it was dark. But we noticed that it has been 3 months now and the grout never looks one color. There are areas that almost look dark brown while others look tan. I know the contractor let the grout sit for a certain amount of time and we didn't use the shower for several days after the grout was put in. We also have a fairly strong fan in the bathroom. The grout is Home Depot Polyblend non-sanded grout in Quartz. Our floor grout is the same color as the tub grout but it looks consistent and lighter. Any ideas why the color for the grout in the tub looks like this?