Color text formatting would be useful
I would find it useful to be able to highlight text at certain points in my story development....not necessarily for printing, but for my own recognition of something that might need additional work before publishing.
I see color mainly as a visual hierarchy of critical tasks. Red (with the annotation, of course) is critical. Other colors might be my visual cue for things that are moderately important, or perhaps even "nice to do, if I have time". Not a critical issue, but it did happen to cross my mind as "nice to have".
AdminBenji Smith (Founder, Shaxpir) commented
Would you mind elaborating on the kinds of things you'd like to annotate with color?
I'd prefer to provide a mechanism for semantic annotations (e.g., this paragraph is a FIRST-DRAFT, or that sentence is a NEEDS-REWRITE). Then, when you're doing a revision pass on your story, you could choose to view all the FIRST-DRAFT sections in red while hiding all the other annotations.
The colors aren't meaningful, in and of themselves, so I'd rather open up a discussion about *how* you use color during your writing process.