How to style Timeline event card?

[syahirdev]

How can I implement style to the event card, like the background color or text color of the content itself? For now, I'm limited to only being able to change the background color set on the TimelineList events.

For example, color: "#dbeafe"

let eventMap = activities.map((activity) => ( {
        id: activity._id,
        start: activity.plannedFrom,
        end: activity.plannedTo,
        title: activity.customer,
        summary: activity.customType,
        color: "#dbeafe"
      } ));
      setEvents(groupBy(eventMap, e => CalendarUtils.getCalendarDateString(e.start)));