kakashi is a theme for the xaringan R package for making slides. kakashi has a clean look with color-blind friendly palettes. Marking text as italics (*) will turn it blue, bold (**) will turn it orange, and striking out (~~) will turn it grey. kakashi copies ideas from many other themes, including metropolis and lucy, but is ultimately unique. That is why this CSS (copy shinobi style) is called kakashi, after the copy ninja.