Allow building code for tvOS and watchOS.

Author: objecthub

Sources/MarkdownKit/AttributedString/Color.swift

@@ -44,9 +44,6 @@
     }
   }
 
-  public let mdDefaultColor = UIColor.darkText.hexString
-  public let mdDefaultBackgroundColor = UIColor.systemBackground.hexString
-
 #elseif os(macOS)
 
   import Cocoa
@@ -68,3 +65,20 @@
   public let mdDefaultBackgroundColor = NSColor.textBackgroundColor.hexString
 
 #endif
+
+#if os(iOS)
+
+  public let mdDefaultColor = UIColor.label.hexString
+  public let mdDefaultBackgroundColor = UIColor.systemBackground.hexString
+
+#elseif os(tvOS)
+
+  public let mdDefaultColor = UIColor.label.hexString
+  public let mdDefaultBackgroundColor = UIColor.white.hexString
+
+#elseif os(watchOS)
+
+  public let mdDefaultColor = UIColor.black.hexString
+  public let mdDefaultBackgroundColor = UIColor.white.hexString
+
+#endif