Go to WP Author Box > Appearance Settings
This option allows you to choose from the predefined skins for the tabs display. You can also create your own by using the available color picker selections :)
As of this version, there are Six(6) skins to choose from. I hope this skins will match your current active theme ;)
Create your own Color Scheme
Yes! you can create your own color scheme by choosing Custom on Select Skins dropdown. The color pickers will automatically populated.