Angular - Material: Progressbar custom color?

Question

I am now trying for hours. I use Material2 and simply want to change the color of the progress-bar. I know there are those themes (primary/accent/warn) but I want to have a

Answer 1

Angular 7 and Material 7.1.1

 ::ng-deep .mat-progress-spinner circle, .mat-spinner circle{
        stroke: green !important; 
}