Some observations:
Dark blobs in the woods are natural and plentiful.
Reflected light is natural and plentiful and that includes UV.
It is hard to pick out stuff in one dimension; relatively easy in three-dimension. A guy in a shaggy suit stands out like a sore thumb in 3-D. These photo commercials showing hidden hunters in camo is a sham. They are easily picked out in real life “if” you are looking for them.
In the mid 1960s I was in the artillery [forward observer] and trained in the art of observation. That’s not to say I’m any better at it than the next guy, but I did get some good lessons in how poor at it the average person is. Without going into a lot of detail, it is amazing how easy it is to fool one’s ability to observe what is sitting in plain sight.
Within the past couple of years I’ve attended some driving courses. Besides getting to power slide around wet parking lots and running courses at high speed, a couple of classroom presentations were provided. One in particular, which all participants flunked [including this highly trained and experienced observer], kinda’ explains how an animal the size of a deer can just appear.
We were shown a video clip of a group of folks dribbling and passing basketballs around. It was a test to determine how observant we were and the object was to count the number of times a basketball was passed to another person. When the video finished, the class was asked for the count. Most got it correct. Next, the instructor asked if anyone saw the person in the gorilla suit. Silence. We thought he was pulling our leg, but when he rewound the video and played it back, this time wilh all looking for the guy in the gorilla suit, we were dumbfounded as there he was, even waving at the camera. Now, how in the heck do you not see a man in a gorilla suit??
Several of us who attended the course were “not” convinced the deal was kosher. It just happened that one of our group recently attended another course where the same video was used. Having once been duped this fellow was not paying attention to basketballs being passed, but looking for the man in the gorilla suit. He was there, so we are now convinced of its authenticity.
Attempting to be unobtrusive in the wild is an exercise in the “art of illusion.” What you wear is only one piece of the puzzle.