We have a sunroom that was added onto the house years after it was built and has one large brick wall. The brick was very dark, and I hated it. I got some white pickling stain and went over it with a brush - a stroke here and a jab there, not worrying about making it all evenly light. The result is much lighter and looks like aged, mottled brick. It was a bit time consuming, but looks great and has not faded at all!