one of those orange trash bags with a pumpkin design you fill up with leaves for Halloween.
Sorry I couldnt resist. But I dont know if I ever really saw orange rain jackets specifically for hunting. I have a yellow-green one for work. I have seen contractors wear orange ones but they wouldnt be insulated if thats what your lookin for.
Just curious, why a poncho? I wore one many years ago on a rainy, windy day. I looked and felt like a sail in the wind. It cost me an 8 pointer. I wear a roll-up rain jacket now that fits in my pocket.