trying to get colors to change

src/EditorFeatures/Core.Wpf/InlineParameterNameHints/InlineParameterNameHintsFormatDefinition.cs

@@ -6,11 +6,16 @@
 using System.ComponentModel.Composition;
 using System.Windows.Media;
 using Microsoft.CodeAnalysis.Host.Mef;
+using Microsoft.VisualStudio.Language.StandardClassification;
 using Microsoft.VisualStudio.Text.Classification;
+using Microsoft.VisualStudio.Utilities;
 
 namespace Microsoft.CodeAnalysis.Editor.InlineParameterNameHints
 {
     [Export(typeof(EditorFormatDefinition))]
+    [Name(InlineParameterNameHintsTag.TagId)]
+    [Order(After = LanguagePriority.NaturalLanguage, Before = LanguagePriority.FormalLanguage)]
+    [UserVisible(true)]
     internal sealed class InlineParameterNameHintsFormatDefinition : EditorFormatDefinition
     {
         [ImportingConstructor]

src/EditorFeatures/Core.Wpf/InlineParameterNameHints/InlineParameterNameHintsTag.cs

@@ -18,6 +18,7 @@ namespace Microsoft.CodeAnalysis.Editor.InlineParameterNameHints
     /// </summary>
     internal class InlineParameterNameHintsTag : IntraTextAdornmentTag
     {
+        public const string TagId = "inline parameter name hints";
         /// <summary>
         /// Creates the UIElement on call
         /// Uses PositionAffinity.Successor because we want the tag to be associated with the following character
@@ -41,15 +42,15 @@ private static UIElement CreateElement(string text, double lineHeight, TextForma
                 FontFamily = format.Typeface.FontFamily, //new System.Windows.Media.FontFamily("Consolas"),
                 FontSize = format.FontRenderingEmSize - 1,
                 Padding = new Thickness(0),
-                Background = System.Windows.Media.Brushes.Lavender,
-                Foreground = System.Windows.Media.Brushes.Gray
+                Background = format.BackgroundBrush,//System.Windows.Media.Brushes.Lavender,
+                Foreground = format.ForegroundBrush //System.Windows.Media.Brushes.Gray
             };
 
             var border = new Border
             {
                 CornerRadius = new CornerRadius(2),
-                Background = System.Windows.Media.Brushes.Lavender,
-                BorderBrush = System.Windows.Media.Brushes.Lavender,
+                Background = format.BackgroundBrush,//System.Windows.Media.Brushes.Lavender,
+                BorderBrush = format.BackgroundBrush, //System.Windows.Media.Brushes.Lavender,
                 BorderThickness = new Thickness(1),
                 VerticalAlignment = VerticalAlignment.Center,
                 Height = lineHeight,

src/EditorFeatures/Core.Wpf/InlineParameterNameHints/InlineParameterNameHintsTagger.cs

@@ -28,6 +28,7 @@ internal sealed class InlineParameterNameHintsTagger : ITagger<IntraTextAdornmen
         private ITextSnapshot _cacheSnapshot;
         private readonly IClassificationFormatMap _formatMap;
         private TextFormattingRunProperties _format;
+        private readonly IClassificationType _keyword;
 
         public event EventHandler<SnapshotSpanEventArgs> TagsChanged;
 
@@ -38,6 +39,7 @@ public InlineParameterNameHintsTagger(InlineParameterNameHintsTaggerProvider tag
             _buffer = buffer;
             _tagAggregator = tagAggregator;
             _formatMap = taggerProvider.ClassificationFormatMapService.GetClassificationFormatMap(textView);
+            _keyword = taggerProvider.ClassificationTypeRegistryService.GetClassificationType(InlineParameterNameHintsTag.TagId);
             _formatMap.ClassificationFormatMappingChanged += this.OnClassificationFormatMappingChanged;
             _format = _formatMap.DefaultTextProperties;
             _tagAggregator.TagsChanged += OnTagAggregatorTagsChanged;
@@ -67,7 +69,7 @@ private TextFormattingRunProperties Format
             get
             {
                 if (_format == null)
-                    _format = _formatMap.DefaultTextProperties;
+                    _format = _formatMap.GetTextProperties(_keyword);
 
                 return _format;
             }

src/EditorFeatures/Core.Wpf/InlineParameterNameHints/InlineParameterNameHintsTaggerProvider.cs

@@ -25,13 +25,17 @@ internal class InlineParameterNameHintsTaggerProvider : IViewTaggerProvider
     {
         private readonly IBufferTagAggregatorFactoryService _bufferTagAggregatorFactoryService;
         public readonly IClassificationFormatMapService ClassificationFormatMapService;
+        public readonly IClassificationTypeRegistryService ClassificationTypeRegistryService;
 
         [ImportingConstructor]
         [Obsolete(MefConstruction.ImportingConstructorMessage, error: true)]
-        public InlineParameterNameHintsTaggerProvider(IBufferTagAggregatorFactoryService bufferTagAggregatorFactoryService, [Import] IClassificationFormatMapService classificationFormatMapService)
+        public InlineParameterNameHintsTaggerProvider(IBufferTagAggregatorFactoryService bufferTagAggregatorFactoryService,
+                                                      [Import] IClassificationFormatMapService classificationFormatMapService,
+                                                      [Import] IClassificationTypeRegistryService classificationTypeRegistryService)
         {
             _bufferTagAggregatorFactoryService = bufferTagAggregatorFactoryService;
             this.ClassificationFormatMapService = classificationFormatMapService;
+            this.ClassificationTypeRegistryService = classificationTypeRegistryService;
         }
 
         /*

src/VisualStudio/Core/Def/ColorSchemes/VisualStudio2017.xml

@@ -63,6 +63,10 @@
             </Color>
             <Color Name="label name">
             </Color>
+            <Color Name="inline parameter name hints">
+                <Foreground Type="CT_RAW" Source="FF808080" />
+                <Background Type="CT_RAW" Source="FFE6E6FA" />
+            </Color>
             <Color Name="xml doc comment - attribute name">
                 <Foreground Type="CT_RAW" Source="FF808080" />
             </Color>
@@ -214,6 +218,10 @@
             </Color>
             <Color Name="label name">
             </Color>
+            <Color Name="inline parameter name hints">
+                <Foreground Type="CT_RAW" Source="FF808080" />
+                <Background Type="CT_RAW" Source="FFE6E6FA" />
+            </Color>
             <Color Name="xml doc comment - attribute name">
                 <Foreground Type="CT_RAW" Source="FF808080" />
             </Color>

src/VisualStudio/Core/Def/ColorSchemes/VisualStudio2019.xml

@@ -69,6 +69,10 @@
             </Color>
             <Color Name="label name">
             </Color>
+            <Color Name="inline parameter name hints">
+                <Foreground Type="CT_RAW" Source="FF808080" />
+                <Background Type="CT_RAW" Source="FFE6E6FA" />
+            </Color>
             <Color Name="xml doc comment - attribute name">
                 <Foreground Type="CT_RAW" Source="FF808080" />
             </Color>
@@ -226,6 +230,10 @@
             </Color>
             <Color Name="label name">
             </Color>
+            <Color Name="inline parameter name hints">
+                <Foreground Type="CT_RAW" Source="FF808080" />
+                <Background Type="CT_RAW" Source="FFE6E6FA" />
+            </Color>
             <Color Name="xml doc comment - attribute name">
                 <Foreground Type="CT_RAW" Source="FF808080" />
             </Color>