anchor.diff:    /// The decoration's container is the area which is filled if [filled] is true
     /// and bordered per the [border]. It's the area adjacent to [icon] and above
     /// the widgets that contain [helperText], [errorText], and [counterText].
  -  ///
  -  /// This color is blended with [focusColor] if the decoration is focused.
     final Color fillColor;
   
  -  /// The color to blend with [fillColor] and fill the decoration's container
  -  /// with, if [filled] is true and the container has input focus.
  -  ///
  -  /// When [InputDecorator.isHovering] is true, the [hoverColor] is also blended into the final
  -  /// fill color.
  -  ///
     /// By default the [focusColor] is based on the current [Theme].
     ///
     /// The decoration's container is the area which is filled if [filled] is
  
positive.code: 
    /// The base fill color of the decoration's container color.
    ///
    /// When [InputDecorator.isFocused] is true, the [focusColor] is also blended
    /// into the final fill color.  When [InputDecorator.isHovering] is true, the
    /// [hoverColor] is also blended into the final fill color.
    ///
    /// By default the fillColor is based on the current [Theme].
  
negative.code:   /// true, and [InputDecoration.fillColor] when not.
    ///
    /// Defaults to false.
    final bool isHovering;
  
    /// If true, the height of the input field will be as large as possible.
  