Fooling who?

I have worked with a lot of customers that think these are good enough- but I really don't get it. Terra cotta colored means what? I did a whole rooftop once with them in ever size... (customer's own!) I have found they don't handle winter much better than a real terra cotta pot. The discolor and crack. But gosh, I see them a lot... this is in my boss' office. Don't tell!