I followed the example for the Sankey Diagram from the Elastic Blog Post [ Kibana/Vega Sankey Post. ] .
We use a dark theme and I can't seem to find where to update the color of the text. I was able to adjust the color of the text on the Axes; what I'm attempting to do is change the color of the "country codes" [from the example] to something other than Black.
FYI: Couldn't post the vega due to character limitations.