The three clothing factors that reveal your location to prey animals / fowl
we can combat the problem of shine by wearing a non reflective type material I prefer wool or Berber. For light field use I also choose to wear a light Poly pro material. I tend to shy away from all Lycra, spandex and polyester. I have found that most canvas based material also after repeated wear tends to reflect light.
Our basic outline from head to mid torso also alerts prey animals to natural dangers. So it is imperative that we wear a clothing that can break up our silhouette. I prefer dark colors on all high areas of clothing to include my face and hands and lighter colors that minimize shading in recessed areas.
3) Contrast to background
This is the most important of the three target indicators as if we are conscious of our surroundings and find a suitable back drop to disguise our ambush location we are golden. however if no thought is made to the backdrop we find ourselves exposed to a scrutiny of our camouflage and ability of clothing to filter UV light.
I personally wear Military type camo. It is durable readily available and fairly inexspensive.Military Camo also has UV inhibators in the fabric that last through many washing cycles. I prefer to wear Multicam as it has the natural earth tones that can blend readily with most terrain.
I hope that I have given you a few more things to consider. Good Luck and Happy Huntin'.