I know that grays and blues are like a bright red flag , according to the article . NAd the best camo for yote hunting seemed to be the M2D camo . It has the right color sceme that blends with the surroundings . All the other camo they had in the article was like a black blobb. Unless used in the shadows .IT is a very good article to improve our getting closer to the coyotes . A must read one .