Changing font color for gigpress info

I’m totally new to all of this. I had someone build my website for me, but I’ve been making all of the modifications to it. The one thing that I can’t figure out is how to change the font color of the “time”, “admission”, and “ages” sections of my gigpress calendar. You can see it here. It matches the same color of the background so it’s not visible. I’ve tried everything that I can think of, but nothing I’ve done has made a difference. Any advice?

Thank you!