To change the current menu item background color of the menu using the extra style use
.menu-extra .weaverx-theme-menu .current-menu-item > a {background-color:red !important;}
To change the space to the right of the menu item with the arrows use
.menu-hover.menu-arrows .toggle-submenu {margin-right:10px;}
.menu-arrows.menu-hover .has-submenu > a {padding-right:20px;}
To change the background of the top width title use
#text-8 .widget-title {background-color:grey;}