Actually I was thinking the one in the back has a hint of a green bandanna but I can't be sure if its part of the outfit.
Could be the Father/Son team maybe they are a gay couple? << did that come out right ?
EDITED: (i found a better picture)
hahaha that comment made me
whether the red part is the "shock of red hair" or part of the outfit, i still think it's the father and son team.
i do believe their team color is light green?
team #3 (supposedly father/son team) looks light green to me. the other option is that this team on the bike is the green couple (team 7)... however the person in front does not seem like a girl and the green couple did not have a chubby person (i think).
also on another note regarding the blue colored team seen. i think it is possible that teams wear clothes that aren't always their team color.