diff --git a/src/main/kotlin/model/applicationfunctions/ColorFilterApplier.kt b/src/main/kotlin/model/applicationfunctions/ColorFilterApplier.kt
index ca9814d..b450d38 100644
--- a/src/main/kotlin/model/applicationfunctions/ColorFilterApplier.kt
+++ b/src/main/kotlin/model/applicationfunctions/ColorFilterApplier.kt
@@ -60,12 +60,12 @@ class ColorFilterApplier {
 				for (y in 0..<imageHeight) {
 					val currentPixelCoordinates = TwoDVector(x,y)
 					val inputColor = inputImage.colorOf(currentPixelCoordinates)
-					//val hashMapKeyColor = copyTransparency(0, inputColor)
-					if (!computedColors.containsKey(inputColor)) {
-						val newColor = calculateColor(inputColor, rGBCube)
-						computedColors[inputColor] = newColor
+					val hashMapKeyColor = copyTransparency(0, inputColor)
+					if (!computedColors.containsKey(hashMapKeyColor)) {
+						val newColor = calculateColor(hashMapKeyColor, rGBCube)
+						computedColors[hashMapKeyColor] = newColor
 					}
-					var outputColor = computedColors[inputColor]!!
+					var outputColor = computedColors[hashMapKeyColor]!!
 
 					outputColor = copyTransparency(inputColor, outputColor)
 
diff --git a/src/main/kotlin/model/applicationfunctions/ColorIntegerConverter.kt b/src/main/kotlin/model/applicationfunctions/ColorIntegerConverter.kt
index c0b6be9..0027e25 100644
--- a/src/main/kotlin/model/applicationfunctions/ColorIntegerConverter.kt
+++ b/src/main/kotlin/model/applicationfunctions/ColorIntegerConverter.kt
@@ -4,6 +4,9 @@ import model.classes.ThreeDVector
 
 class ColorIntegerConverter {
 	companion object {
+		private const val TRANSPARENCY_MASK = 255 shl 24
+		private const val RGB_MASK = 0.inv() xor TRANSPARENCY_MASK
+
 		fun vectorToIntColor(vector : ThreeDVector):Int {
 			val comps = vector.getAllComp()
 			var res = 255
@@ -18,5 +21,17 @@ class ColorIntegerConverter {
 			val blue = (color and 255)
 			return ThreeDVector(red, green, blue)
 		}
+
+
+
+		/**
+		 * Adds one color's transparency to another.
+		 * @param donorColor Color to take the transparency from.
+		 * @param recipientColor to apply the transparency onto.
+		 * @return The recipient color with the donor color's transparency.
+		 */
+		fun copyTransparency(donorColor : Int, recipientColor : Int) : Int {
+			return (TRANSPARENCY_MASK and donorColor) or (RGB_MASK and recipientColor)
+		}
 	}
 }
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