You can port the script quite easily to paper.js and import your vector shapes via paperScope.project.importSVG( ). There's not much to the script - just run through your desired an array of pathItems and set:
pathItems[n].fillColor = raster.getAverageColor(pathItems[n]);

If you run your script from the Sketch Book (sketch.paperjs.org), there's even a handy button to download the output as SVG.

If you'd prefer to work with a desktop client, Inkscape has an active scripting community and has this functionality working in its "Tiled Clones" feature.

I don't believe anyone is going to create a CC compatible plugin within 30 days. If you'd like to take a shot at it, the source code is available on github: https://github.com/scriptographer/scriptographer

this looks promising. Could you show me how you would code it? so I gather that this is a html file with some scripts loaded in. Is this sort of it?

EDIT: well, it turns out the code doesn't format to anything readable, i'll put It on gitHub

Hers a link to the github: https://github.com/samdeman22/Public/blob/master/colorize.html

No, isn't this for school? Check out http://paperjs.org/tutorials/ instead. All the pieces are there.

It is, but not for the coding or scripting etc, my art project is in graphics design, and I see the colorizer the only way fit to achieve the desired effect. Those tutorial scripts don't exactly clear things up, they just sort of throw the code at you, for me anyway. It might be perfectly straight forward for the avid scripter.

I could probably take this, and my noob questions to stack overflow, and stop bothering you if you want?

thank you for telling me about paperscript anyway.