colors
This seems like an independent, if not official, source for which green/blue we should use:
http://skiing.about.com/od/safetyforskiers/a/skitrailratings.htm
(click the green square then click "next" within the popup to see the blue square)
… it's pretty close to another site I found:
http://www.alpinemtsp.org/Ski_Safety.htm#How_Trails_Are_Rated
Trying to mimic the first one, I find RGB values of 0,150,0 gets close to the green, and 50,110,200 gets close to the blue. The black is obviously going to be 0,0,0.
Please provide opinions—once we make this decision it will be a *lot* of work to change.
