its in a core install also, where you can edit the css colors from the acp. Only thing is you have to either remember or write down the original colors in case you mess up and want to change back.
vf.com css addon is created specifically for their site, and is a sort of full blow css editor opposed to just color selection as you cannot access the theme files directly. It won't be available for download i doubt as they are trying to provide a business around vf.com like wordpress.com for example.