How to customize background colour

I have used this plugin before but for some reason am having trouble determining how to customize the background color of the content area for each event listing. I would have thought it was in the plugin settings area but don’t see it there. (URL: https://hogtowncycles.ca/events/)

The CSS I’ve identified for this element (https://take.ms/tg4d9) is:

.tribe-events-list .tribe-events-loop .tribe-event-featured, .tribe-events-list #tribe-events-day.tribe-events-loop .tribe-event-featured, .type-tribe_events.tribe-events-photo-event.tribe-event-featured .tribe-events-photo-event-wrap, .type-tribe_events.tribe-events-photo-event.tribe-event-featured .tribe-events-photo-event-wrap:hover {
background-color: #0ea0d7;
}

However, the inspector attributes that CSS to (index):627 which leads me to believe it’s controlled natively. But where do I go then to customize it? There’s no actual events page that exists in the dashboard. Am I overlooking something simple?

Thank you.