darkSolid method
Implementation
AzButton darkSolid(){
Color color = AzUtlis().colorDark;
Color colorOverlay = AzUtlis().colorDarkOverlay;
_overlayColor ??= MaterialStateProperty.all(colorOverlay);
_foregroundColor ??= MaterialStateProperty.all(color);
_side = MaterialStateProperty.all(BorderSide(
width: _borderWidth,
color: color
));
return this;
}