01-06-2008
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Join Date: Mar 2005
Last Activity: 29 March 2012, 7:00 PM EDT
Location: Ireland
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The colors are not set there, this is simply how to differentiate the differnt objects to be highlighted. The actual colorscheme files are in /usr/share/vim/vim71/colors, as far as I know quotes are already handled using the identifiers shSingleQuote and shDoubleQuote in sh.vim in the syntax directory.