Oh, hell -- when I taught a law school class a few years ago they told me not to use a red pen because it's too negative and might upset the poor 1Ls.
My response, more or less, was Jesus fucking H Christ, if a law student can't handle a little criticism, or actually gives a shit what color that criticism comes in, they are going to collapse in the first 3 months of practice so they might as well figure that out now.
If only I had known, I'm sure I could have worked in the phrase "monkey-fucking scribe"