anchor.diff:      listIndent: 32.0,
       blockquotePadding: 8.0,
       blockquoteDecoration: new BoxDecoration(
  -      backgroundColor: Colors.blue[100],
  +      backgroundColor: Colors.blue.shade100,
         borderRadius: new BorderRadius.circular(2.0)
       ),
       codeblockPadding: 8.0,
       codeblockDecoration: new BoxDecoration(
  -      backgroundColor: Colors.grey[100],
  +      backgroundColor: Colors.grey.shade100,
         borderRadius: new BorderRadius.circular(2.0)
       )
     );
  
positive.code:     listIndent: 32.0,
      blockquotePadding: 8.0,
      blockquoteDecoration: new BoxDecoration(
        backgroundColor: Colors.blue[100],
        borderRadius: new BorderRadius.circular(2.0)
      ),
      codeblockPadding: 8.0,
      codeblockDecoration: new BoxDecoration(
        backgroundColor: Colors.grey[100],
        borderRadius: new BorderRadius.circular(2.0)
      )
    );
  
negative.code: 
    /// Creates a [MarkdownStyle] from the [TextStyle]s in the provided [theme].
    MarkdownStyle.defaultFromTheme(ThemeData theme) : super(
      a: new TextStyle(color: Colors.blue),
      p: theme.textTheme.body1,
      code: new TextStyle(
        color: Colors.grey.shade700,
        fontFamily: "monospace",
        fontSize: theme.textTheme.body1.fontSize * 0.85
      ),
  