Listen, #ggplot: Iove you, I do. But 90% of the time when I want to set fill or color manually I don't want to have to look up and figure out an entire fucking palette of colors. I want 2 or 3 colors, the end. I want to specify them easily.
#ItsNotYouItsMe I realize this
I just want firebrick and navy. That's all. It always takes me 10 minutes of searching to remember that scale_color_manual exists; I always end up seeing pages for scale_color_discrete first.