i'm trying to find out how to maintain the brick floors in my passive solar house. it's a beautiful deep brick red color - but it's fading (wearing away?) in high traffic areas. obviously the brick must have been treated (painted?) with some kind of paint, glaze, finish or something. but the only brick related items i can find in my local home depot or lowes has to do with outdoor or patio brick. does anyone have any ideas? i really don't want to change it - just maintain it. thanks!