JBZoo\Image\Filter::fill PHP Method

    public static function fill($image, $color = '#000000')
    {
        $width = imagesx($image);
        $height = imagesy($image);
        $rgba = Helper::normalizeColor($color);
        $fillColor = imagecolorallocatealpha($image, $rgba[0], $rgba[1], $rgba[2], $rgba[3]);
        Helper::addAlpha($image, false);
        imagefilledrectangle($image, 0, 0, $width, $height, $fillColor);
    }