ap/vim-css-color — pull request #17 by sencer (2012-04-24 00:20:00+00:00)
Title: More Precise Colors

I reported an issue about not-so-precise colors. With the striking example of " #46a546". This "not even a little elegant" solution of mine kind of resolves the issue.

I would also suggest looking at chrisbra/color_highlight, which does the color highlighting much better -but only on demand.