How do I change the style of the Events+ calendar widget?

I'd like to make upcoming events more prominent in the Calendar widget for this plugin as it appears to inherit the a class styles of my theme.

I've been dissecting all the php and css files of this plugin but it's proving to be a right pain.

Could you point me to the location of the class:
eab-has_events
so that I can apply a style to it please?

thanks!