anchor.diff:                  height: 44.0,
                   child: new Padding(
                     padding: const EdgeInsets.symmetric(horizontal: 16.0, vertical: 8.0),
  -                  child: new Row(children: <Widget>[ const Text(
  -                    'Sign in',
  -                    style: const TextStyle(color: CupertinoColors.activeBlue),
  -                  ) ]),
  +                  child: new SafeArea(
  +                    top: false,
  +                    bottom: false,
  +                      child: new Row(children: <Widget>[ const Text(
  +                      'Sign in',
  +                      style: const TextStyle(color: CupertinoColors.activeBlue),
  +                    ) ]),
  +                  ),
                   ),
                 ),
               ),
  
positive.code:           : Tab2ConversationBubbleColor.gray,
        ),
      );
      return new Row(
        mainAxisAlignment: isSelf ? MainAxisAlignment.end : MainAxisAlignment.start,
        mainAxisSize: MainAxisSize.min,
        crossAxisAlignment: isSelf ? CrossAxisAlignment.center : CrossAxisAlignment.end,
        children: children,
      );
    }
  }
  
negative.code:           ),
          ));
        },
        child: new SafeArea(
          top: false,
          bottom: false,
          child: new Padding(
            padding: const EdgeInsets.only(left: 16.0, top: 8.0, bottom: 8.0, right: 8.0),
            child: new Row(
              children: <Widget>[
                new Container(
                  height: 60.0,
                  width: 60.0,
                  decoration: new BoxDecoration(
                    color: color,
                    borderRadius: new BorderRadius.circular(8.0),
                  ),
                ),
                new Expanded(
                  child: new Padding(
                    padding: const EdgeInsets.symmetric(horizontal: 12.0),
                    child: new Column(
                      crossAxisAlignment: CrossAxisAlignment.start,
                      children: <Widget>[
                        new Text(colorName),
                        const Padding(padding: const EdgeInsets.only(top: 8.0)),
                        const Text(
                          'Buy this cool color',
                          style: const TextStyle(
                            color: const Color(0xFF8E8E93),
                            fontSize: 13.0,
                            fontWeight: FontWeight.w300,
                          ),
                        ),
                      ],
                    ),
                  ),
                ),
                new CupertinoButton(
                  padding: EdgeInsets.zero,
                  child: const Icon(CupertinoIcons.plus_circled, color: CupertinoColors.activeBlue),
                  onPressed: () { },
                ),
                new CupertinoButton(
                  padding: EdgeInsets.zero,
                  child: const Icon(CupertinoIcons.share, color: CupertinoColors.activeBlue),
                  onPressed: () { },
                ),
              ],
            ),
          ),
        ),
      );
  