code: public void setLineColor(@ColorInt int color) {
      jsonObject.addProperty(LineOptions.PROPERTY_LINE_COLOR, ColorUtils.colorToRgbaString(color));
    }
docs: Set the LineColor property
  <p>
  The color with which the line will be drawn.
  </p>
  <p>
  To update the line on the map use {@link LineManager#update(Annotation)}.
  <p>
  
  @param color value for String