I was in the Gray (Gris) section 314 when I went to see the World Cup. It was up there. While quite neurotic anyways, being on rooftops, cliffs, ladders, climbing trees and looking down steep inclines exagerates the condition. Point being is that it is up there and it is steep (not just the price). Would I do it again? Definitely! You can enjoy the game in the "bleeds" without spending too much. I don't know anything about the yellows nor the oranges. Perhaps meazza21 can provide specifics. Also, there was a guy MarcinMontreal (sp?) who used to post on this board who may know more. Maybe try a Habs board.
Here is a link to the Bell Centre seating chart:
http://www.tickco.com/sc/559-1119/
One of the things that I will remember about the game that I attended was that every time Mario Lemieux touched the puck, the crowd went off!