code: public Fingerprint circleScanningColor(int circleScanning) {
          this.circleScanning = circleScanning;
          this.circleView.setBackgroundTintList(ColorStateList.valueOf(getContext().getColor(circleScanning)));
          return this;
      }
docs: Set the fingerprint circular background color in scanning state.
  @param circleScanning color id
  @return the Fingerprint object itself