Change Cart Order Color

I want to change this color in the learnpress cart, it’s also in the become a teacher page for some reason. I’m not sure why this color was not changed when I changed the theme colors (doing that changed the “add to cart” button color). If someone could tell me how to do this or the code to put inside “additional css” that would be great!

Thanks in advance!

The image showing the color: https://imgur.com/di7FiKw

The page I need help with: [log in to see the link]