That table in the final arena was a nice color, definitely gray, but I agree that the orange/red probably would have looked better in white. At least in my opinion. The cloth and the balls really stand out on the overhead camera, so I doubt you'll see that changing.
There were only two other tables in that room, and that's where the semifinals were played. Those were the same color combination as all the other tables in the three rooms where all the other pool was played. They did have a separate practice room available this time again, they didn't in May, and those were also the same color combination as all the other tables. There was a white table up near the control desk in Room C where they had all the big trophies on display. Not sure if that was the one from the finals last time, but it did look good with the black curtains behind it, and the trophies standing on it.
There was some controversy with the one team being DQ'ed in the semifinals, but the team that won it all also advanced because of a team being DQ'ed. That happened in the round just prior to the semis. The APA has observers that will come and score the entire match from the round of 16, all the way to the finals. Notice the green shirts sitting ringside, those are the observers. The observers will also come and score individual matches during the tournament, even starting in the very first round. There are some very specific and predetermined guidelines for player advancement throughout the whole tournament, and they do make efforts to ensure that players are playing at an appropriate skill level.