Yellow - Very busy, very boggy in areas, but very close to the arena, not quite as bad for the riots as green/purp but you have a higher chance of someone tripping over your tent and breaking it ^^
Orange - Never been in it
Green - same as purple usually
Purple - med walk, usually pretty boggy, always exciting, prone to getting riots
Brown - Usually fairly dry, quite long walk, very safe
White - bloody long walk, but a nice one over the bridge, with a lot more of a community feel, and very safe