Rename tests

Something is getting cached causing tests to sporadically fail.
Hopefully this fixes that.

tests/ImageSharp.Tests/Colors/ColorTests.cs → tests/ImageSharp.Tests/Colors/Rgba32Tests.cs

@@ -1,4 +1,4 @@
-// <copyright file="ColorTests.cs" company="James Jackson-South">
+// <copyright file="Rgba32Tests.cs" company="James Jackson-South">
 // Copyright (c) James Jackson-South and contributors.
 // Licensed under the Apache License, Version 2.0.
 // </copyright>
@@ -15,7 +15,7 @@ namespace ImageSharp.Tests
     /// <summary>
     /// Tests the <see cref="Rgba32"/> struct.
     /// </summary>
-    public class ColorTests
+    public class Rgba32Tests
     {
         /// <summary>
         /// Tests the equality operators for equality.

tests/ImageSharp.Tests/Colors/ColorVectorTests.cs → tests/ImageSharp.Tests/Colors/RgbaVectorTests.cs

@@ -1,4 +1,4 @@
-// <copyright file="ColorVectorTests.cs" company="James Jackson-South">
+// <copyright file="RgbaVectorTests.cs" company="James Jackson-South">
 // Copyright (c) James Jackson-South and contributors.
 // Licensed under the Apache License, Version 2.0.
 // </copyright>
@@ -15,7 +15,7 @@ namespace ImageSharp.Tests
     /// <summary>
     /// Tests the <see cref="RgbaVector"/> struct.
     /// </summary>
-    public class ColorVectorTests
+    public class RgbaVectorTests
     {
         /// <summary>
         /// Tests the equality operators for equality.

tests/ImageSharp.Tests/Colors/ColorVectorTransformTests.cs → tests/ImageSharp.Tests/Colors/RgbaVectorTransformTests.cs

@@ -1,4 +1,4 @@
-// <copyright file="ColorVectorTransformTests.cs" company="James Jackson-South">
+// <copyright file="RgbaVectorTransformTests.cs" company="James Jackson-South">
 // Copyright (c) James Jackson-South and contributors.
 // Licensed under the Apache License, Version 2.0.
 // </copyright>
@@ -12,7 +12,7 @@ namespace ImageSharp.Tests.Colors
     /// Tests the color transform algorithms. Test results match the output of CSS equivalents.
     /// <see href="https://jsfiddle.net/jamessouth/L1v8r6kh/"/>
     /// </summary>
-    public class ColorVectorTransformTests
+    public class RgbaVectorTransformTests
     {
         private static readonly ApproximateFloatComparer FloatComparer = new ApproximateFloatComparer(0.01F);