code: public void setBackgroundColor(int color) {
          colorUnpressed = color;
  
          if(!isSelected()) {
              if (rippleAnimationSupport()) {
                  ripple.setRippleBackground(colorUnpressed);
              }
              else {
                  view.setBackgroundColor(colorUnpressed);
              }
          }
      }
docs: alias of setColorUnpressed