Background of Calendar Item - SharePoint Calendar on Teams Tab

Hi,

I converted a classic SharePoint calendar to use a modern calendar view as the default view (instructions used) and then added it as a tab on Teams. The calendar itself is displayed as expected except for the background of the items. The background color is different from a regular Teams calendar and the contrast between the background and text color is bad. I tried to change the color using view formatting for the day but that is not working. Is this a bug on Teams or do I need to adjust something in SharePoint?