There will come a time when I need to build a chrome addon. But not yet.

http://www.sitepoint.com/series/build-a-google-documents-word-count-tool/

Chrome developer tool saving

Nice video on a powerful tool.  Most importantly, it shows you how to save the changes that you make.

http://www.youtube.com/watch?v=N8SS-rUEZPg

Also, see

http://stackoverflow.com/questions/6843495/how-to-save-css-changes-of-styles-panel-of-chrome-developer-tools