This worked a treat - thanks Josh!!!!  Looking forward to the updated version when you release that, and I've let the client know we'll adjust it again then. 

Thanks again, great work, great plugin! :) 

That's awesome!  Ideally I'd wait for the update, but in the interest of time could you point me to that file and where the code generating the fill colors is?  That would be huge and save some frustrating conversations with the client.  Thanks Josh!!!