[Plugin: Comprehensive Google Map Plugin] Custom Infowindow layout

Great plugin, however, is it possible to customize the way that the infowindow is styled? So for example, being able to add a border radius to edges, different background colour and etc etc.

I’m not really sure in terms of javascript if its possible or anything as I don’t know too much about java, but just wondering if it is possible, and if so; how?

Thanks!

http://ww.wp.xz.cn/extend/plugins/comprehensive-google-map-plugin/