Last modified: 2014-02-28 23:53:14 UTC
The save dialog uses a gray color on a very small text. This isn't good for contrast, and gives it rather 'light' color which might communicate a 'disabled' state to some users, which you don't want with a license text. Just as with Special:UserLogin, I think we should switch to a slightly darker gray on small text.
The meta-design of the save process for wikitext and for VisualEditor are being reviewed by Design and by Legal right now; hopefully there'll be an update soon enough.