diff --git a/Sources/MagickWand/Wand/PixelWand/PixelWand+Color.swift b/Sources/MagickWand/Wand/PixelWand/PixelWand+Color.swift
index 9b2fc8a..f659863 100644
--- a/Sources/MagickWand/Wand/PixelWand/PixelWand+Color.swift
+++ b/Sources/MagickWand/Wand/PixelWand/PixelWand+Color.swift
@@ -41,33 +41,61 @@ public struct Colors {
     }
 
     public var rgba: MagickWand.RGBA {
-        let red = PixelGetRed(self.pointer)
-        let green = PixelGetGreen(self.pointer)
-        let blue = PixelGetBlue(self.pointer)
-        let alpha = PixelGetAlpha(self.pointer)
-
-        return MagickWand.RGBA(red, green, blue, alpha)
+        get {
+            let red = PixelGetRed(self.pointer)
+            let green = PixelGetGreen(self.pointer)
+            let blue = PixelGetBlue(self.pointer)
+            let alpha = PixelGetAlpha(self.pointer)
+
+            return MagickWand.RGBA(red, green, blue, alpha)
+        }
+        set {
+            PixelSetRed(self.pointer, newValue.red)
+            PixelSetGreen(self.pointer, newValue.green)
+            PixelSetBlue(self.pointer, newValue.blue)
+            PixelSetAlpha(self.pointer, newValue.alpha)
+        }
     }
 
     public var hsl: MagickWand.HSL {
-        var hue: Double = 0
-        var saturation: Double = 0
-        var lightness: Double = 0
-
-        PixelGetHSL(self.pointer, &hue, &saturation, &lightness)
-
-        return MagickWand.HSL(hue, saturation, lightness)
+        get {
+            var hue: Double = 0
+            var saturation: Double = 0
+            var lightness: Double = 0
+
+            PixelGetHSL(self.pointer, &hue, &saturation, &lightness)
+
+            return MagickWand.HSL(hue, saturation, lightness)
+        }
+        set {
+            PixelSetHSL(self.pointer, newValue.hue, newValue.saturation, newValue.lightness)
+        }
     }
 
-    public var cmyk: MagickWand.CMYK {
-        let (cyan, magenta, yellow, key) = (
-            PixelGetCyan(self.pointer),
-            PixelGetMagenta(self.pointer),
-            PixelGetYellow(self.pointer),
-            PixelGetBlack(self.pointer)
-        )
-        
-        return MagickWand.CMYK(cyan, magenta, yellow: yellow, key: key)
+    public var cmy: MagickWand.CMY {
+        get {
+            let (cyan, magenta, yellow) = (
+                PixelGetCyan(self.pointer),
+                PixelGetMagenta(self.pointer),
+                PixelGetYellow(self.pointer)
+            )
+            
+            return MagickWand.CMY(cyan, magenta, yellow: yellow)
+        }
+        set {
+            PixelSetCyan(self.pointer, newValue.cyan)
+            PixelSetMagenta(self.pointer, newValue.magenta)
+            PixelSetYellow(self.pointer, newValue.yellow)
+        }
+    }
+    
+    public var black: Double {
+        get {
+            return PixelGetBlack(self.pointer)
+        }
+        set {
+            PixelSetBlack(self.pointer, newValue)
+        }
     }
 
     public var string: String? {
@@ -79,18 +107,28 @@ public struct Colors {
     }
 
     public var count: Int {
-        
-        return PixelGetColorCount(self.pointer)
+        get {
+            return PixelGetColorCount(self.pointer)
+        }
+        set {
+            PixelSetColorCount(self.pointer, newValue)
+        }
     }
 
     public var info: MagickWand.ColorInfo {
-        var infoPacket = MagickPixelPacket()
-
-#if !os(Linux)
-        PixelGetMagickColor(self.pointer, &infoPacket)
-#endif
-
-        return MagickWand.ColorInfo(infoPacket)
+        get {
+            var infoPacket = MagickPixelPacket()
+            
+            #if !os(Linux)
+                PixelGetMagickColor(self.pointer, &infoPacket)
+            #endif
+            
+            return MagickWand.ColorInfo(infoPacket)
+        }
+        set {
+            var packet = newValue.info
+            PixelSetMagickColor(self.pointer, &packet)
+        }
     }
 }
 
@@ -101,6 +139,11 @@ extension PixelWand {
     }
 
     public var index: Quantum {
-        return PixelGetIndex(self.pointer)
+        get {
+            return PixelGetIndex(self.pointer)
+        }
+        set {
+            PixelSetIndex(self.pointer, newValue)
+        }
     }
 }
diff --git a/Sources/MagickWand/WandTypes/MagickWand+ColorInfo.swift b/Sources/MagickWand/WandTypes/MagickWand+ColorInfo.swift
index f82e7e1..f222339 100644
--- a/Sources/MagickWand/WandTypes/MagickWand+ColorInfo.swift
+++ b/Sources/MagickWand/WandTypes/MagickWand+ColorInfo.swift
@@ -39,6 +39,27 @@ extension MagickWand {
         private(set) public var blue: Double
         private(set) public var opacity: Double
         private(set) public var index: Double
+        
+        internal var info: MagickPixelPacket {
+            var result = MagickPixelPacket()
+            
+            result.colorspace = self.colorspace.type
+            
+            result.matte = MagickBooleanType.init(self.isMatte ? 1 : 0)
+            
+            result.fuzz = self.fuzz
+            
+            result.depth = self.depth
+            
+            result.red = MagickRealType(self.red)
+            result.green = MagickRealType(self.green)
+            result.blue = MagickRealType(self.blue)
+            result.opacity = MagickRealType(self.opacity)
+            
+            result.index = MagickRealType(self.index)
+            
+            return result
+        }
 
         init(_ info: MagickPixelPacket) {
             self.colorspace = MagickWand.Colorspace(info.colorspace)
diff --git a/Sources/MagickWand/WandTypes/MagickWand+Colors.swift b/Sources/MagickWand/WandTypes/MagickWand+Colors.swift
index 20c1a9f..c3b4271 100644
--- a/Sources/MagickWand/WandTypes/MagickWand+Colors.swift
+++ b/Sources/MagickWand/WandTypes/MagickWand+Colors.swift
@@ -60,18 +60,16 @@ extension MagickWand {
         }
     }
     
-    public struct CMYK {
+    public struct CMY {
         
         public var cyan: Double
         public var magenta: Double
         public var yellow: Double
-        public var key: Double
         
-        public init (_ cyan: Double, _ magenta: Double, yellow: Double, key: Double) {
+        public init (_ cyan: Double, _ magenta: Double, yellow: Double) {
             self.cyan = cyan
             self.magenta = magenta
             self.yellow = yellow
-            self.key = key
         }
     }
 }