I wouldn't paint it. Just mud it out. Find some good dirt, soil, add water and wear some rubber gloves or a brush. Mud it out good and that is your best natural, non-reflective base you can use. I don't care what color the blind is, after its mudded out then brushed up, it's perfect.
I was looking at a few of my Eliminator blinds and they are kind of redish as well. UV's fading the image from being left out. They still hunt great. Once camoed out, you don't see the denier.