Hi Jeff
1=> Actually, the template which are using on our demo site is not shipped with the extension by default. It is built based on out Eshop Fashion Pro template. So if you want to use that template, you will need to purchase both Events Booking and the template. You can see the template on this link
joomdonation.com/joomla-templates/eshop-...on-pro-template.html
Once you purchased the template and the extension, our developer will help changing the color for you as requested
2=> It is supported by the extension out of the box. You can just set Access of the events to Registered and only registered users can view and Register for your events
3=> The extension has shopping cart mode to allow registering for multiple events within the checkout. However, if you have many events, users will have to use pagination to navigate and find the events he want to register. Not sure if that works for you (I don't understand how Quick Cart works)
Please let me know if you have further questions
Regards,
Tuan