Babylon.js/inspector/sass/defines.scss

// @import url(https://maxcdn.bootstrapcdn.com/font-awesome/4.6.3/css/font-awesome.min.css);
@import url(https://use.fontawesome.com/releases/v5.0.13/css/all.css);
@import url(https://fonts.googleapis.com/css?family=Inconsolata);

$font               : 'Inconsolata', sans-serif;

// ------------- //
// If you update these colors, you should also 
// replace them in the class Inspector as well, 
// as it's used for custom themes
// ------------- //

$color              : #ccc;
$background         : #242424;
$background-active  : #2c2c2c;
$color-top          : #f29766;
$color-bot          : #5db0d7;
$color-error        : #fa371d;

$background-lighter : lighten($color: $background, $amount         : 3%);
$background-lighter2: lighten($color: $background-lighter, $amount : 5%);
$background-lighter3: lighten($color: $background-lighter2, $amount: 5%);

$resizebar-width    : 10px;
$tabbar-height      : 50px;
$searchbar-height   : 30px;

$font-family-icons  : 'Font Awesome 5 Free', sans-serif;