code: private TwoColors getScrollBarButtonBackgroundColors(boolean buttonsTogether, boolean isIncrease) {
          if (state == Which.FOREGROUND_CAP) {
              return scrollBarCapColors;
          } else if (isPressed) {
              return isIncrease ? scrollBarButtonIncreasePressed : scrollBarButtonDecreasePressed;
          } else {
  
              if (buttonsTogether) {
                  return isIncrease ? scrollBarButtonIncreaseTogether : scrollBarButtonDecreaseTogether;
              } else {
                  return isIncrease ? scrollBarButtonIncreaseApart : scrollBarButtonDecreaseApart;
              }
          }
      }
docs: DOCUMENT ME!
  
  @param  buttonsTogether DOCUMENT ME!
  @param  isIncrease      DOCUMENT ME!
  
  @return DOCUMENT ME!