Hi Tom!
Thanks for reaching out!
While our “Terms of Service” doesn’t allow us to do customization (see here) I can sneak a small one just to point you in the right direction and see if that helps.
You may want to try these styles in tribe-events/tribe-events.css and see if it´s a good approach to what you are trying to achieve:
.tribe-events-calendar thead th {
background-color: #fff !important;
color: #333;
}
Also, here´s a good article about applying basic modifications within your event pages that may be useful: https://theeventscalendar.com/knowledgebase/changing-fonts-and-colours/
I hope that helps!
Best!
Victor