that's enuff to make a person wonder isn't it? personally, i believe camo is a current 'craze'.
all one has to do is look back at some of the MANY photos available of bowhunters, fred bear being a prime example, to see camo was NOT used that commonly prior to the vietnam era when camo clothing came available from milsurp sources.
i think there's enough success stories from today, that will support that MOVEMENT, SMELL and HEARING will be more critical that actual color/pattern of clothing.
i read recently that some biologists now believe that SIGHT is the first line of defense for many if not most animals; they SEE MOVEMENT, they HEAR MOVEMENT and they catch odors on the wind. basically, they, as well as us, can see farther (the antelope is reported to have 10x power vision as an example) to spot potential threats. MOVEMENT not color/pattern is key.
pigs are a perfect example: when rooting, they see more than they smell, and they may still see more than the can hear due to the noises they make while rooting.
color... you don't wear a white shirt in dark wood environment, pattern... you don't wear stripes in a polka-dot environment... movement, you don't run madly about do you? hearing...you don't have your MP3 turned up on full volume do you? and smell, you shower and keep the wind in your face don't you? they all do add up but we must make the best of what we know to make it work.
very interesting topic. lots of good thoughts and info.