color-active-tab.md

Coloring the active tab

1. Create the file ~/.config/gtk-3.0/gtk.css

2. Write in it:

TerminalWindow .notebook tab:active {
    background-color: #def;
}

See colors in HTML for a list of colors.

source: http://askubuntu.com/questions/40332/how-to-make-selected-tab-in-terminal-more-prominent