tribal has come to mean solid black and pointy. But Tribal is too broad a category. I like to add other geometrics and simple or primary colors.
Many years ago I was featured in a magazine that showcased some of the "Tribal" work I was doing. Soon that became my specialty. While I have a strong background in graphic arts, it certainly isn't all I do. It just adds to my particular handling of solid black work—I strive to make it clean, crisp and seamless. No fat outlines scarring the skin surface to hold that black edge.