Reactivate blending color methods on ImageInterface

src/Drivers/Gd/Encoders/PngEncoder.php

@@ -53,12 +53,8 @@ class PngEncoder extends GenericPngEncoder implements SpecializedInterface
         // clone output instance
         $output = Cloner::cloneEmpty($image->core()->native());
 
-        /**
-         * Decode configured blending color
-         *
-         * @var Color
-         */
-        $blendingColor = $this->driver()->handleInput($this->driver()->config()->blendingColor);
+        // Decode configured blending color
+        $blendingColor = $image->blendingColor();
 
         // allocate blending color with slighty different alpha value
         // to avoid "overwriting" pixels with the same color in the

src/Interfaces/ImageInterface.php

@@ -254,7 +254,6 @@ interface ImageInterface extends IteratorAggregate, Countable
      * Return color that is mixed with transparent areas when converting to a format which
      * does not support transparency.
      *
-     * @deprecated Use configuration options of image manager instead
      * @throws RuntimeException
      * @return ColorInterface
      */
@@ -264,7 +263,6 @@ interface ImageInterface extends IteratorAggregate, Countable
      * Set blending color will have no effect unless image is converted into a format
      * which does not support transparency.
      *
-     * @deprecated Use configuration options of image manager instead
      * @param mixed $color
      * @throws RuntimeException
      * @return ImageInterface