public function testPngBlue()
 {
     $original = $this->getOriginalImage(ImageType::PNG);
     $res = $this->applyFilter(new ImageFilterColorize(ColorFactory::blue()), $original, __METHOD__);
     $this->assertColorQ1($res, 'ff00ff');
     $this->assertColorQ2($res, '00ffff');
     $this->assertColorQ3($res, self::BLUE);
     // unchanged
     $this->assertColorQ4($res, self::WHITE);
 }
 public function testBlue()
 {
     $this->assertColor(ColorFactory::blue(), "0000ff");
 }