Superhero Hype has a first-hand report from the Victoria, BC (that's in Canada, by the way) set of X-Men 3. The kicker in this piece is the discription of Kelsey Grammar as The Beast in full makeup.
I also had the luck of literally walking into Kelsey Grammer with his Beast head on, T-Shirt and shorts... I was going up the driveway to my car and he was coming down to the castle... The Beast is awwwwwesome!... I didn't recognize him because I was so astonished with the face... I told him he was "looking good" and then recognized his voice when he said thanks. The face is jet black and huge and builds up on his squarish features. Just at the side the skin turns a deep blue with a solid line running down the side so his ears are blue and his neck and shoulders. The hair is a different blue and looks like he put his finger in an electric socket. No one will be disappointed!
That sounds encouraging.