$primary-bg: #2c3e50; $secondary-bg: lighten($primary-bg, 25%); $body-bg: $primary-bg; $text-color: #fff; $navbar-default-bg: $secondary-bg; $navbar-default-color: #fff; $navbar-default-link-color: #fff; $navbar-default-link-hover-color: darken($navbar-default-link-color, 10%); $link-color: lighten($secondary-bg, 25%); $font-size-base: 20px;