如何更改ElevatedButton颜色或阴影Flutter

要更改ElevatedButton您的属性，您应该style:像这样使用该属性：

ElevatedButton(
style: ElevatedButton.styleFrom(
primary: Colors.blue, //button's fill color
onPrimary: Colors.red, //specify the color of the button's text and icons as well as the overlay colors used to indicate the hover, focus, and pressed states
onSurface: Colors.orange, //specify the button's disabled text, icon, and fill color
shadowColor: Colors.black, //specify the button's elevation color
elevation: 4.0, //buttons Material shadow
textStyle: TextStyle(fontFamily: 'roboto'), //specify the button's text TextStyle
padding: const EdgeInsets.only(top: 4.0, bottom: 4.0, right: 8.0, left: 8.0), //specify the button's Padding
minimumSize: Size(20, 40), //specify the button's first: width and second: height
side: BorderSide(color: Colors.yellow, width: 2.0, style: BorderStyle.solid), //set border for the button
shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(35.0)), // set the buttons shape. Make its birders rounded etc
enabledMouseCursor: MouseCursor.defer, //used to construct ButtonStyle.mouseCursor
disabledMouseCursor: MouseCursor.uncontrolled, //used to construct ButtonStyle.mouseCursor
visualDensity: VisualDensity(horizontal: 0.0, vertical: 0.0), //set the button's visual density
tapTargetSize: MaterialTapTargetSize.padded, // set the MaterialTapTarget size. can set to: values, padded and shrinkWrap properties
animationDuration: Duration(milliseconds: 100), //the buttons animations duration
enableFeedback: true, //to set the feedback to true or false
alignment: Alignment.bottomCenter, //set the button's child Alignment
),
onPressed: () => {} , //set both onPressed and onLongPressed to null to see the disabled properties
onLongPress: () => {}, //set both onPressed and onLongPressed to null to see the disabled properties
child: Text('ElevatedButton')
),