Enabling fading out colors for alternate mode (#34)

Author: marcelwgn

README.md

@@ -5,6 +5,7 @@
 
 ### Visual Studio extension for colorization of indent levels.
 You can download the latest version of this extension on the [Visual Studio Marketplace](https://marketplace.visualstudio.com/items?itemName=chingucoding.IndentRainbow).
+Screenshots of the extension can be found in <a></a>[this folder](./docs) or on the extension page linked above.
 
 ### Summary
 The aim of this extension is to make it easier to differentiate different levels of indentation in your source code. 

docs/Gradient-Alternating-fading-dark-theme.png

@@ -65,7 +65,7 @@ public Indent(IWpfTextView view, ITextDocumentFactoryService textDocumentFactory
             this.view.LayoutChanged += OnLayoutChanged;
             drawer = new BackgroundTextIndexDrawer(layer, this.view);
 
-            colorGetter = new RainbowBrushGetter(OptionsManager.colors.Get(), OptionsManager.errorBrush.Get(), OptionsManager.colorMode.Get());
+            colorGetter = new RainbowBrushGetter(OptionsManager.colors.Get(), OptionsManager.errorBrush.Get(), OptionsManager.colorMode.Get(), OptionsManager.fadeColors.Get());
             validator = new IndentValidator(
                 OptionsManager.indentSize.Get()
             );
@@ -81,24 +81,24 @@ public Indent(IWpfTextView view, ITextDocumentFactoryService textDocumentFactory
                     validator = new IndentValidator(OptionsManager.fileExtensionsDictionary.Get()[extension]);
                 }
             }
+            var highlightingMode = OptionsManager.highlightingMode.Get();
 
-            if (OptionsManager.highlightingMode.Get() == HighlightingMode.Alternating)
+            if (OptionsManager.highlightingMode.Get() == HighlightingMode.Monocolor)
             {
-                decorator = new AlternatingLineDecorator(
+                decorator = new MonocolorLineDecorator(
                     drawer, colorGetter, validator)
                 {
                     detectErrors = OptionsManager.detectErrors.Get()
                 };
             }
-            if (OptionsManager.highlightingMode.Get() == HighlightingMode.Monocolor)
+            else
             {
-                decorator = new MonocolorLineDecorator(
+                decorator = new AlternatingLineDecorator(
                     drawer, colorGetter, validator)
                 {
                     detectErrors = OptionsManager.detectErrors.Get()
                 };
             }
-
         }
 
         /// <summary>