My house is sooo builder grade. The people who built our house did everything as cheap as possible.
One of things I've always hated is the dark grout on dark ceramic tile. Yuck! It never seemed clean but what can you do?
Well I was looking at Lowe's one day and found grout paint! Perfect! I got the off white for my floors.
Follow the directions on the bottle. So easy. Here is my before and after!