Almost every residential installer has heard the phrase uttered from a surprised customer at five minutes after five o’clock, something like “That is not what I picked,” or “My floor doesn’t look anything like the sample board.” This gut-wrenching feeling can happen when the client is not fully aware of shade variation that can occur with ceramic and porcelain tiles. Hopefully, it wasn’t your customer and you gained this valuable lesson from someone else’s mistake or oversight, but it could happen to you if you are not careful.