After embedding a dashboard with color set as "none" and one sheet with color set as "none" I am still getting a background of white due to server-side CSS on the Tableau Public server.
This is not the desired behavior. I expect a server-side css background of rgba(0,0,0,0) so that my graph in the div would show (with a z-index of +1) just the graph & axes over the other content in my page, similar to d3 behavior.
This is a shame, because I don't want to resort to d3. When transparent sheets functionality was announced at TC18 I was very excited. Can this be rectified, or has anyone got a reasonable work-around (yes I am sure if I had a server I could change the CSS file), but that defeats the purpose.