Use SF Symbols for icons in the Sidebar when on Big Sur Issue #2323

Mac/AppAssets.swift

@@ -118,7 +118,13 @@ struct AppAssets {
 	}()
 
 	static var masterFolderImage: IconImage = {
-		return IconImage(RSImage(named: NSImage.folderName)!)
+		if #available(macOS 10.16, *) {
+			let image = NSImage(systemSymbolName: "folder", accessibilityDescription: nil)!
+			let coloredImage = image.tinted(with: NSColor(named: "AccentColor")!)
+			return IconImage(coloredImage, isSymbol: true)
+		} else {
+			return IconImage(RSImage(named: NSImage.folderName)!)
+		}
 	}()
 
 	static var searchFeedImage: IconImage = {
@@ -126,7 +132,13 @@ struct AppAssets {
 	}()
 
 	static var starredFeedImage: IconImage = {
-		return IconImage(RSImage(named: NSImage.smartBadgeTemplateName)!, isSymbol: true)
+		if #available(macOS 10.16, *) {
+			let image = NSImage(systemSymbolName: "star.fill", accessibilityDescription: nil)!
+			let coloredImage = image.tinted(with: NSColor(named: "StarColor")!)
+			return IconImage(coloredImage, isSymbol: true)
+		} else {
+			return IconImage(RSImage(named: NSImage.smartBadgeTemplateName)!, isSymbol: true)
+		}
 	}()
 
 	static var timelineStar: RSImage! = {
@@ -134,11 +146,23 @@ struct AppAssets {
 	}()
 
 	static var todayFeedImage: IconImage = {
-		return IconImage(RSImage(named: NSImage.smartBadgeTemplateName)!, isSymbol: true)
+		if #available(macOS 10.16, *) {
+			let image = NSImage(systemSymbolName: "sun.max.fill", accessibilityDescription: nil)!
+			let coloredImage = image.tinted(with: .orange)
+			return IconImage(coloredImage, isSymbol: true)
+		} else {
+			return IconImage(RSImage(named: NSImage.smartBadgeTemplateName)!, isSymbol: true)
+		}
 	}()
 
 	static var unreadFeedImage: IconImage = {
-		return IconImage(RSImage(named: NSImage.smartBadgeTemplateName)!, isSymbol: true)
+		if #available(macOS 10.16, *) {
+			let image = NSImage(systemSymbolName: "largecircle.fill.circle", accessibilityDescription: nil)!
+			let coloredImage = image.tinted(with: NSColor(named: "AccentColor")!)
+			return IconImage(coloredImage, isSymbol: true)
+		} else {
+			return IconImage(RSImage(named: NSImage.smartBadgeTemplateName)!, isSymbol: true)
+		}
 	}()
 
 	static var swipeMarkReadImage: RSImage = {

Mac/Resources/Assets.xcassets/AccentColor.colorset/Contents.json

@@ -0,0 +1,38 @@
+{
+  "colors" : [
+    {
+      "color" : {
+        "color-space" : "srgb",
+        "components" : {
+          "alpha" : "1.000",
+          "blue" : "0.933",
+          "green" : "0.416",
+          "red" : "0.031"
+        }
+      },
+      "idiom" : "universal"
+    },
+    {
+      "appearances" : [
+        {
+          "appearance" : "luminosity",
+          "value" : "dark"
+        }
+      ],
+      "color" : {
+        "color-space" : "srgb",
+        "components" : {
+          "alpha" : "1.000",
+          "blue" : "0.957",
+          "green" : "0.620",
+          "red" : "0.369"
+        }
+      },
+      "idiom" : "universal"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

Mac/Resources/Assets.xcassets/Contents.json

@@ -1,6 +1,6 @@
 {
   "info" : {
-    "version" : 1,
-    "author" : "xcode"
+    "author" : "xcode",
+    "version" : 1
   }
 }

Mac/Resources/Assets.xcassets/StarColor.colorset/Contents.json

@@ -0,0 +1,20 @@
+{
+  "colors" : [
+    {
+      "color" : {
+        "color-space" : "srgb",
+        "components" : {
+          "alpha" : "1.000",
+          "blue" : "0.204",
+          "green" : "0.776",
+          "red" : "0.976"
+        }
+      },
+      "idiom" : "universal"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}