R Custom Visual - Setting colours for each value in a field/column

Hi again Daniel,

Thanks very much for having a look at it - I appreciate the time you spent trying to get it working. It looks like I'm not going mad after all and can't set colours the way I wanted to be able to (unless the visuals team has some insight on how to do it). I may just end up doing something simple like passing in a colour theme based on some enumerated values (which is a bit too much like hard-coding for my taste).

I'll post any information I can gather here in case someone else runs into the same issue.

Thanks again.

Frank