Half Caff and Red Eye Coffee are produced all around the globe. And they change according to region in where they are cultivated. So, the question arises what is Half Caff and Red Eye Coffee's differentiating factor?In following section we will take a close look at what is Half Caff and Red Eye Coffee color, serving style, types and much more. First thing to know is what are the different types of Half Caff and Red Eye Coffee. Well, Half Caff types include Not Available while types of Red Eye Coffee are NA.