Change foreground and background color of eventtype

Hello,

I would like to change the foreground and the background color of the event type in on a Detail event page (…/all-events/?event=123).

Looking at the HTML shows this:

<div class="ep-event-category ep-box-row">
<div class="ep-box-col-12">
<span class="ep-bg-warning ep-py-2 ep-px-3 ep-mr-3" id="ep_single_event_event_type" style="background-color:FF5599;color:#43CDFF;">
Feste</span>
</div>
</div>

Where and how can I change the background the white and the foreground to black?

Thanks for your support!