public void setThumbColor(int thumbColor, int indicatorColor) {
        mThumb.setColorStateList(ColorStateList.valueOf(thumbColor));
        mIndicator.setColors(indicatorColor, thumbColor);
    }
Sets the color of the seek thumb, as well as the color of the popup indicator.

@param thumbColor     The color the seek thumb will be changed to
@param indicatorColor The color the popup indicator will be changed to
                      The indicator will animate from thumbColor to indicatorColor
                      when opening
app/src/main/java/com/duan/musicoco/view/discreteseekbar/DiscreteSeekBar.java