diff --git a/QuickLook.Plugin/QuickLook.Plugin.TextViewer/Syntax/Light/Lyric.xshd b/QuickLook.Plugin/QuickLook.Plugin.TextViewer/Syntax/Light/Lyric.xshd
new file mode 100644
index 0000000..3bf3691
--- /dev/null
+++ b/QuickLook.Plugin/QuickLook.Plugin.TextViewer/Syntax/Light/Lyric.xshd
@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="utf-8" ?>
+
+<SyntaxDefinition name="Lyric" extensions=".lrc" xmlns="http://icsharpcode.net/sharpdevelop/syntaxdefinition/2008">
+	<Color name="Number" foreground="#006400" exampleText="3.14" />
+	<Color name="Punctuation1" foreground="#800080" />
+	<Color name="Punctuation2" foreground="#C04000" />
+	<Color name="Punctuation3" foreground="#000000" />
+
+	<RuleSet name="Object">
+		<Span color="Punctuation3" ruleSet="Expression">
+			<Begin>:</Begin>
+		</Span>
+	</RuleSet>
+
+	<RuleSet name="Array">
+		<Import ruleSet="Expression"/>
+		<Span color="Punctuation3">
+			<Begin>,</Begin>
+		</Span>
+	</RuleSet>
+
+	<RuleSet name="Expression">
+		<Span color="Punctuation1" ruleSet="Object" multiline="true">
+			<Begin>\{</Begin>
+			<End>\}</End>
+		</Span>
+		<Span color="Punctuation2" ruleSet="Array" multiline="true">
+			<Begin>\[</Begin>
+			<End>\]</End>
+		</Span>
+		<Rule color="Number">
+			\b0[xX][0-9a-fA-F]+|(\b\d+(\.[0-9]+)?|\.[0-9]+)([eE][+-]?[0-9]+)?
+		</Rule>
+	</RuleSet>
+
+	<RuleSet>
+		<Import ruleSet="Expression"/>
+	</RuleSet>
+</SyntaxDefinition>
diff --git a/QuickLook/TrayIconManager.cs b/QuickLook/TrayIconManager.cs
index 59314b1..ff5576c 100644
--- a/QuickLook/TrayIconManager.cs
+++ b/QuickLook/TrayIconManager.cs
@@ -44,7 +44,7 @@ internal class TrayIconManager : IDisposable
             })
         { Enabled = !App.IsUWP };
 
-    private string _attr = App.IsUWP ? $" (UWP{(App.IsSandBox ? string.Empty : "-SandBox")})" : string.Empty;
+    private readonly string _attr = App.IsUWP ? $" (UWP{(App.IsSandBox ? string.Empty : "-SandBox")})" : string.Empty;
 
     private TrayIconManager()
     {