George Syntax Highlighting for vim
To install this custom syntax highlighting, copy the syntax/george.vim file to your .vim/syntax/ directory.
You can now activate the syntax highlighting via the vim command set syntax=george
For automatic file detection, copy the ftdetect/george.vim file to your .vim/ftdetect/ directory. It will mark all files ending in .grg as George files.
You can uncomment (or comment) various pieces of the syntax to enable (or disable) various pieces of highlighting.
For example, operator highlighting is off by default, but you can uncomment the relevant lines to turn it on.
Your milage may vary. :P