Is the CSS only styling available with this gem?

[quidproquo]

I tried to do styling by CSS with this gem (as described by the HC docs), and while it seems that many elements can be styled via CSS, there are still in-line styles that can't be overridden by CSS. Is there another version of the JS code that enables this?

[PerfectlyNormal]

From skimming the docs it looks like there exists two versions of the JavaScript, classic and unstyled.
This gem bundles just the classic one.

If you look at the Rakefile, I have a task for automating the update process. If you like, you could change this to include both versions so users can choose which one they want. I'd merge that in, but as I don't really use Highcharts any more, it might be a while before I get the chance to do it myself.