I would recommend that they go with the PRIDE color scheme--white floor and a white cage. 'Twould give it a slightly more professional appearance.
I always thought that Pride was a bit "cartoonish" with their presentation. UFC's stone type look is a better look to me. I always loved both organizations, but I have followed the UFC since the very first one, and I guess that I always just preferred and was used to their look from the begining and it hasn't really changed.
Interesting. I've always thought the opposite, though--that Pride, while it may look a little too "squeaky clean", looks closer to what a combat sport should be. The UFC's cage looks a tad too theatrical for me, and a bit reminiscent of professional wrestling. Naturally, neither reflects on the fighters, who would be just as good if they were competing in a sumo ring.
