I completely redid Central America and BC/Alaska, as well as the Great Slave Lake and friends. Hundreds of other lakes also added all over the continent, and many minor and not so minor corrections to other coasts, borders, etc. Plus, of course, rivers. These should be much closer to the real ones. I did not do most of Canada's rivers because I don't know very much about them and couldn't find resources.
EDIT: The colour differences are not intentional but have something to do with the file itself. 'Tis probable that our use of differing graphical programs is causing this; it could be avoided by use of a specific filetype and bitcount.