Color question

Hi @livetube,

Use this code: 

#wpforo #wpforo-wrap #wpforo-menu {
   background-color: #4a4646;
}
#wpforo #wpforo-wrap .wpforo-active {
   background-color: #465646 !important;
}

The CSS code should be added in the "Custom CSS code" textarea, located in the Dashboard > Forums > Settings > Style Tab.  

The red marked values should be changed as you like. 

Please don't forget to delete all caches and press Ctrl+F5 (twice) on the frontend before checking to reload the updated CSS file. 

You're asking your question on wrong forum. Please note, all questions related to the core wpForo plugin should be asked in the wpForo.com community. Here we support wpForo paid addons.