settings: revise vim colorscheme for latest GTK

git-svn-id: https://subversion.assembla.com/svn/magicant/settings@299 9a5e03f8-c55e-0410-a490-9d27d325e308
settings: add status color settings in gitconfig

git-svn-id: https://subversion.assembla.com/svn/magicant/settings@300 9a5e03f8-c55e-0410-a490-9d27d325e308