Mobow, that's the same Fall Gray you've seen me talk about before... Maybe the way the sun reflects off the shirt is what you're seeing? This pic provides a pretty good look at the pattern and its contrasting blocks I referred to up above, and gives you a sense of scale as to how big the overlaying sticks and limbs are, to answer your question:
Another shot of the Fall Gray, and its contrast:
I threw this one in for those who've never seen the old Fall Brown stuff; I've got Fall Gray pants on and a FB shirt on. Notice the base color,which is tan as opposed to the base on the pants being more "whitish".
Again, showing some of the different patterns for those who've never seen... This is Spring Green: