fixed color crash

Sources/Views/PreferencesView.swift

@@ -23,6 +23,7 @@ struct PreferencesView: View {
         }
     }
     @EnvironmentObject private var sparkleUpdater: SparkleUpdater
+    @Environment(\.colorScheme) private var colorScheme
 
     @AppStorage("pingInterval") private var storedPingInterval: Int = 10
     @AppStorage("refreshInterval") private var storedRefreshInterval: Int = 60
@@ -143,12 +144,39 @@ struct PreferencesView: View {
     }
     private func backgroundColor(for tab: Tab) -> Color {
         if selection == tab {
-            return Color.accentColor
+            return sidebarSelectionColor
         }
         if hoveredTab == tab {
-            return Color.accentColor.opacity(0.2)
+            return sidebarHoverColor
+        }
+        return sidebarBaseColor
+    }
+
+    private var sidebarSelectionColor: Color {
+        switch colorScheme {
+        case .dark:
+            return Color(red: 0.22, green: 0.45, blue: 0.88)
+        default:
+            return Color(red: 0.10, green: 0.39, blue: 0.90)
+        }
+    }
+
+    private var sidebarHoverColor: Color {
+        switch colorScheme {
+        case .dark:
+            return Color(red: 0.20, green: 0.22, blue: 0.27)
+        default:
+            return Color(red: 0.87, green: 0.91, blue: 0.98)
+        }
+    }
+
+    private var sidebarBaseColor: Color {
+        switch colorScheme {
+        case .dark:
+            return Color(red: 0.15, green: 0.16, blue: 0.19)
+        default:
+            return Color(red: 0.96, green: 0.97, blue: 0.99)
         }
-        return Color.accentColor.opacity(0.08)
     }
 }