You have several options to consider in this situation. The first choice: Apply a spray-on product so that all tiles look uniform. It'll cost a fraction of what you'd spend to replace them. If you go this route, Vern Rich, managing director, Shawmut Design and Construction, warns that products like these might damage the tile's acoustic properties, so keep that in mind. Rich also suggests "harvesting," especially if tile replacement is necessary due to damage. Check the nonpublic areas of your building: If those areas have better-looking tiles, swap them out and place the damaged ones there instead so they won't be seen.