Yes, using git grep without --no-color gets exactly the colour codes you describe. But as of revision 105630 (the commit mentioned in message 13), vc-git-grep uses the command "git grep --no-color -n -e <R> -- <F>" which suppresses search term highlighting. Have I missed something?

On 6 September 2011 10:32, Juri Linkov <juri@jurta.org> wrote:
> I built revision 105661, then ran $ src/emacs -Q but I did not get search
> highlighting with vc-git-grep. File name highlighting works fine. My git
> version is:
>
> $ git --version
> git version 1.7.6.1

My git version is 1.7.1 and I get search highlighting when I enable
colour for git with: $ git config --global color.ui auto
and when `git grep' runs without "--no-color".