Fix Bgra32.ToString()

Former-commit-id: c254e98d59d28aaf84fef26734af28a8c1d2ab9b
Former-commit-id: a0a1615e1d6f0c6197da20834678d84cf3cdfccc
Former-commit-id: f0aea6fd0f1ee89c00f6fb3fd6ca9161adc8c632

src/ImageProcessor/Colors/Formats/Bgra32.cs

@@ -15,7 +15,7 @@ namespace ImageProcessor
     public struct Bgra32 : IEquatable<Bgra32>
     {
         /// <summary>
-        /// Represents a <see cref="Bgra32"/> that has B, G, R, and A values set to zero.
+        /// Represents a 32 bit <see cref="Bgra32"/> that has B, G, R, and A values set to zero.
         /// </summary>
         public static readonly Bgra32 Empty = default(Bgra32);
 
@@ -172,10 +172,10 @@ namespace ImageProcessor
         {
             if (this.IsEmpty)
             {
-                return "Color [ Empty ]";
+                return "Bgra32 [ Empty ]";
             }
 
-            return $"Color [ B={this.B}, G={this.G}, R={this.R}, A={this.A} ]";
+            return $"Bgra32 [ B={this.B}, G={this.G}, R={this.R}, A={this.A} ]";
         }
 
         /// <summary>