docker-sites-status-server/frontend/SiteStatus/src/theme.scss

$primaryPalette: mat-palette($mat-grey, 700, 300, 900);
$accentPalette: mat-palette($mat-blue-grey, 400);
$warnPalette: mat-palette($mat-red, 500);

$app-theme: mat-dark-theme(
                $primaryPalette,
                $accentPalette,
                $warnPalette
);