gtk.css

/*
You can type here any CSS rule recognized by GTK+.
You can temporarily disable this custom CSS by clicking on the “Pause” button above.

Changes are applied instantly and globally, for the whole application.
*/

headerbar {
  background: #202124;
  border-color: #202124;
  box-shadow: 0 1px #202124 inset;
  color: #aaaaaa;
}

headerbar:backdrop {
  color: #777777;
}

.terminator-terminal-window notebook stack,
.terminator-terminal-window notebook {
  border: 0px;
}

.terminator-terminal-window notebook header {
  background: #000000;
  border: none;
  padding: 0px;
}

.terminator-terminal-window notebook tab {
  background: #000000;
  border-top: none;
  border-left: none;
  border-right: 1px solid #303030;
  border-bottom: 1px solid #303030;
  margin: 0px;
  padding: 0px;
}

.terminator-terminal-window notebook tab:checked {
  background: #000000;
  color: #008080;
  border-top: none;
  border-left: none;
  border-right: 1px solid #303030;
  border-bottom: 1px solid #303030;
  box-shadow: 0 -1px #004040 inset;
}

.terminator-terminal-window notebook tab:hover {
  box-shadow: 0 -1px #003030 inset;
}

.terminator-terminal-window paned separator {
  background: #303030;
}