Funny, I was meditating on this theme some more yesterday, and noted that in the system I use, both Mars and Venus are variants of red—Mars a fire engine red, Venus a kind of saffron—as if they are themselves a spectrum.

Been reading the hesychasts, and they speak of the soul's "incensive" and "appetitive" powers. These can degenerate into violence and lust if they are not maintained, but they alternately have more positive uses, in their telling—the incensive as righteous wrath against evil (I think again of the Homeric hymn to Ares) and the appetitive as desire for the Good.