Can't change bubble text color

Hi guys,
I’ve got a dark themed website with very light grey text. Unfortunately, it seems the bubbles are inheriting the text color for the name of each KML entry from the theme. Is there a way to either change the text color, or the color of the bubble? I’ve tried editing the CSS with no luck.

Thanks.

https://www.ads-software.com/extend/plugins/comprehensive-google-map-plugin/