[Plugin: Calendar] CSS issues

I’ve been using Calendar since 2009 with hardly a hitch. I love it. I just started expanding categories and assigning colors. I noticed a quirk in the widget and I’m trying to identify the source of the issue so I can fix it.

I call my “today’s events” and “upcoming events” “HAPPENS TODAY/HAPPENS SOON” in the sidebar on the main page, the text is black as it should be and always has been. When I click on either an individual post or page, the text turns link-blue, which makes it harder to read. I’m not sure why the difference or where to fix it. I’ve looked at the CSS under calendar settings and I’m not sure where to start with that. It may be the theme, except that I haven’t updated my theme in a long time, so the sudden change has no explanation other than having added more categories to the calendar.

Well, that’s the problem. Now, if at all possible, I would like to have one category where the background color is black and the text color is white and I can’t figure that out, either. If it’s not possible, I’ll understand. It’d just be convenient if I could.

editing to add my URL – https://lynnhappens.com
Thanks,
Seth