Making equality for spaces work on backingVector.

src/ImageSharp/Colors/Spaces/CieLab.cs

@@ -161,7 +161,7 @@ namespace ImageSharp.Colors.Spaces
         /// <inheritdoc/>
         public bool Equals(CieLab other)
         {
-            return this.AlmostEquals(other, Constants.Epsilon);
+            return this.backingVector.Equals(other.backingVector);
         }
 
         /// <inheritdoc/>

src/ImageSharp/Colors/Spaces/CieXyz.cs

@@ -152,7 +152,7 @@ namespace ImageSharp.Colors.Spaces
         /// <inheritdoc/>
         public bool Equals(CieXyz other)
         {
-            return this.AlmostEquals(other, Constants.Epsilon);
+            return this.backingVector.Equals(other.backingVector);
         }
 
         /// <inheritdoc/>

src/ImageSharp/Colors/Spaces/Cmyk.cs

@@ -162,7 +162,7 @@ namespace ImageSharp.Colors.Spaces
         /// <inheritdoc/>
         public bool Equals(Cmyk other)
         {
-            return this.AlmostEquals(other, Constants.Epsilon);
+            return this.backingVector.Equals(other.backingVector);
         }
 
         /// <inheritdoc/>

src/ImageSharp/Colors/Spaces/Hsl.cs

@@ -181,7 +181,7 @@ namespace ImageSharp.Colors.Spaces
         /// <inheritdoc/>
         public bool Equals(Hsl other)
         {
-            return this.AlmostEquals(other, Constants.Epsilon);
+            return this.backingVector.Equals(other.backingVector);
         }
 
         /// <inheritdoc/>

src/ImageSharp/Colors/Spaces/Hsv.cs

@@ -174,7 +174,7 @@ namespace ImageSharp.Colors.Spaces
         /// <inheritdoc/>
         public bool Equals(Hsv other)
         {
-            return this.AlmostEquals(other, Constants.Epsilon);
+            return this.backingVector.Equals(other.backingVector);
         }
 
         /// <inheritdoc/>