Colour pattern and flat or 3d cammo it doesn't matter as animals are colour blind. Growler is right keep the wind in your face keeps scent and noise muffled.
Other things to keep in mind if wanting to get serious stalking boots must be quiet or easily removed to go barefoot to get close.
Washing your hunting gear use this
http://www.anaconda.com.au/Product/B...Wash-Detergent as detergents leave scents that are un natural plus have phosphorous that when in the sun to animals makes you have a neon sign saying I'm here as it reflects light strangely that their sight pics up that we can't.
Know the land you hunt on and keep you clothes in a bag with leaves and branches from your hunting area so you smell natural to that area.
Don't shower or use soaps or deodorants or eat spicy foods like curries etc these seep from your skin when you sweat etc.