I for one never liked WDW's castle very much. The verticality is a nice change from DL's, but the gray and blue are just too drab and flat. I think the gold they added looks interesting, at least from the photos I've seen. At least it's not the My Little Pony Castle that we have at DL, or worse, a Giant Cake.
I was down at WDW in January and shot some photos of the castle overlay. I'd say it's not horrible, but I'm also glad it's temporary. They might have overdone it on the gold coloring, but anything is better than a pink birthday cake!