By default, the platform does not have this option. You can use the following CSS code.

Please follow the steps below:

1. Go to BuddyBoss > Theme Options

2. Under Custom Codes, enable CSS

3. Append the following:

.bb-media-model-wrapper .activity-comments .acomment_inner .acomment-content_block, .buddypress-wrap .activity-comments .acomment_inner .acomment-content_block {

    background-color: white;

    color: #000;

}

/*add codes here*/

4. Save changes.

Note: Any modifications are considered as custom work already. Know more about our Support policy here: https://www.buddyboss.com/support-policy/