By default, the background hover color is the same as the Content Alternate Background Color. For reference, please see the below image:
  

In case you want to set a specific color, you may use CSS. Please follow the steps below:


1. Go to BuddyBoss > Theme Options

2. Under Custom Codes, enable CSS

3. Append the following:

.bb-template-v2 .site-header .user-wrap.menu-item-has-children>.user-link:hover:before{
    background-color: #bab6a7;
}

Note: just change the hexadecimal (#bab6a7) with your preferred color.


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/

Screenshots


Without code


With code