Camo clad western hunters who sky line themselves,and tromp around without giving any thought to their approach to an area stick out like sore thumbs;and look like camo clad hunters sticking out like sore thumbs....even to human eyes.
And the mule deer bucks they are after are long gone a half mile or more before the hunters get into any kind of range.
I've shot mule deer in jeans and denim jackets in warmish weather....back east here we wear wool and most is plaid but not all of it.I wear Filson Cruiser in solid green or red plaid a lot....Even at close distances in the woods a careful still hunter will stop next to something that breaks up his outline.
As others have pointed out, use wind,ground cover,terrain,and sun to mask approaches and don't worry if you don't have the latest Mossy Oak or Real Tree patterns....they are mostly fashion statements.
