Accordion tab/button background color change

I know there are a few topics in the forum similar to this but nothing I have tried has worked. When I go to edit the accordion there is a Style, Shape, and Color drop down. The color dropdown has only a limited number of set colors. How can I put a custom color here instead?

There is no custom css section in the bottom of the accordion settings box and everything I’ve tried in the Global css in the customizer has had little to no effect on my accordion. Any ideas?

Thanks

Page:
www.brain-bodyhealth/home-2

Hi There,

I can see the CSS you were adding is for Cornerstone element accordion. It will not work on your site because you are using visual composer accordion element. Totally different element width different structure. To change those almost green background color, please try using the following CSS:

    background-color: red;
}```

Hope this helps.