In allmon3 i was able to customize the colors of my dashboad but i cannoth figure out how to change the grey color in the menu buttons on the left side.
Customizing the button colors is not currently supported in Allmon3. You can file a request for enhancement here: Sign in to GitHub · GitHub
The buttons are dynamically created with code in /usr/share/allmon3/js/functions.js .
It’s doable if you’re comfortable editing the js file.
Make a backup…
And know that if you modify that file, it’ll be blown away on the next upgrade. 
Yep thats why I asked here and now put in a request…