By default the background color will be the same as the warning color, but with 1% opacity. If you want to change the background to a different color, it will require custom work. However, our team was able to create a workaround for you.  


Please follow the steps below:


1. Go to BuddyBoss > Theme Options

2. Under Custom Codes, enable CSS

3. Append the following:


body #buddypress p.warning {
background-color: #ff0000;
}


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/