CODE EXAMPLE FOR CSS

mat radio button color

::ng-deep .mat-radio-button.mat-accent .mat-radio-ripple .mat-ripple-element {
	opacity: 0.5 !important;     /*click effect color change*/
	background-color: blue !important;
}

::ng-deep .mat-radio-button.mat-accent .mat-radio-inner-circle {
	background-color: blue!important;   /*inner circle color change*/
}

::ng-deep.mat-radio-button.mat-accent.mat-radio-checked .mat-radio-outer-circle {
	border-color:blue!important; /*outer ring color change*/
}