The template was a really older version, I updated to the latest version. The default blue color was hard to read on your site so I changed it to a green color used throughout the site.
You can change this to any color you want by adjusting it with the
color shortcode option enabled by the Slim template. Here’s what the shortcode looks like now:
[connections category_name='Member,Regular Attender' color='#ccff33']
Hope that helps!