RedeyeVentures\GeoPattern\GeoPattern::setBaseColor PHP Method

    public function setBaseColor($baseColor)
    {
        if (preg_match('/^#[a-f0-9]{6}$/i', $baseColor)) {
            $this->baseColor = $baseColor;
            return $this;
        }
        throw new \InvalidArgumentException("{$baseColor} is not a valid hex color.");
    }