The sample home page has a widget with silver background color. That widget has a section with class bg-secondary.
However, I can’t find how to set background color anywhere. After searching, I found a few posts on this topic with different answers, including https://colorlibsupport.com/t/individual-background-color-for-widgets-on-front-page/
How do we assign bg-secondary to another widget? Are there more background color to choose from and assign to widgets?
Thanks in advance.