Really love this plugin, it is very fun to use when you get instant updates in the editor preview pane 
Is there an easy way to make the plugin work better with dark themes?
There seems to be some example css in https://github.com/knsv/mermaid/tree/master/src/themes but I’m not sure what parts of it I would need to copy over to the theme CSS to make it the default for charts
Right now it looks like this with the bundled Dark theme, I would like to at least make all text and arrows white :
