Accordion CSS

You can add a class name to the accordion. In your css you can control the colors. Let say your class name is my-custom-accordion.

.my-custom-accordion .panel-title {
background-color: red;
}

.my-custom-accordion .panel-title:hover{
background-color: blue;
}

What I dont know is how to change it based on open or collapsed state since those classes are added to the body of the section and not the title.