Someone correct me if I am wrong but I think those contracts might have expired by now. If so they didn't have to do this at all. The sidewalk bricks have gone away, at least for the most part. If there were a few stragglers left with an active contract, they were only required to exhibit them until the contracts ran out. I don't know the situation, but I thought we had gone in depth on this factor a long time ago. Why they decided to keep them might be because of the definition of Legacy. But, I'm sure the contracts stated something specific at the time of purchase. I think it was more of a way to decorate the entrance without it being a guest obligation to negotiate amongst the grave stones looking for something fun to do. Like the colors or not, it does add a brightness and light felling to the park, something that Epcot has been lacking for along time. EPCOT Ctr. became a park that took itself way to seriously.