I particularly liked the Canadian uniform when they all walked into the Sochi Stadium during the opening ceremonies. The coat is styled after Hudson Bay blankets where ARE definitely a symbol of Canada.
I actually had a similar one when I was a teenager. The jacket was light green with a darker green stripe. I also still have a couple of wool Hudson Bay Blankets that actually have the black stripe(s) in one corner which indicated how many beaver pelts they were traded for.
All in all quite liked most of the Uniforms. The American uniform from a distance looked like they were wearing polka dots however when they got closer you could see the dots were actually stars and the sweaters were a design of red/white/blue with stars and stripes.
The German entrance looked much more carnival than serious. Just too many colours and jazzy motif.
I see Uniforms as being rather seriously focus'd however a costume is - well - a fun costume.