Restored RebeccaPurple in the MagickColors.

Author: dlemstra

src/Magick.NET.Core/Colors/IMagickColors{TQuantumType}.cs

@@ -587,6 +587,11 @@ public partial interface IMagickColors<TQuantumType>
     /// </summary>
     IMagickColor<TQuantumType> Purple { get; }
 
+    /// <summary>
+    /// Gets a system-defined color that has an RGBA value of #663399FF.
+    /// </summary>
+    IMagickColor<TQuantumType> RebeccaPurple { get; }
+
     /// <summary>
     /// Gets a system-defined color that has an RGBA value of #FF0000FF.
     /// </summary>

src/Magick.NET/Colors/MagickColors.cs

@@ -710,6 +710,12 @@ public static MagickColor PowderBlue
     public static MagickColor Purple
         => MagickColor.FromRgba(128, 0, 128, 255);
 
+    /// <summary>
+    /// Gets a system-defined color that has an RGBA value of #663399FF.
+    /// </summary>
+    public static MagickColor RebeccaPurple
+        => MagickColor.FromRgba(102, 51, 153, 255);
+
     /// <summary>
     /// Gets a system-defined color that has an RGBA value of #FF0000FF.
     /// </summary>
@@ -1562,6 +1568,12 @@ IMagickColor<QuantumType> IMagickColors<QuantumType>.PowderBlue
     IMagickColor<QuantumType> IMagickColors<QuantumType>.Purple
         => Purple;
 
+    /// <summary>
+    /// Gets a system-defined color that has an RGBA value of #663399FF.
+    /// </summary>
+    IMagickColor<QuantumType> IMagickColors<QuantumType>.RebeccaPurple
+        => RebeccaPurple;
+
     /// <summary>
     /// Gets a system-defined color that has an RGBA value of #FF0000FF.
     /// </summary>

tests/Magick.NET.Tests/Colors/MagickColorsTests/TheProperties.cs

@@ -20,7 +20,7 @@ public void ShouldContainTheCorrectNumberOfColors()
                 .Where(property => property.PropertyType == typeof(MagickColor))
                 .Count();
 
-            Assert.Equal(142, colorCount);
+            Assert.Equal(143, colorCount);
         }
     }
 }