modules/javafx.controls/src/main/java/javafx/scene/control/skin/ColorPalette.java

*** 1,7 ****
  /*
!  * Copyright (c) 2012, 2016, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.  Oracle designates this
--- 1,7 ----
  /*
!  * Copyright (c) 2012, 2017, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.  Oracle designates this
*** 242,251 ****
--- 242,252 ----
                  customRowIndex++;
              }
          }
          for (int i = 0; i < numEmpty; i++) {
              ColorSquare emptySquare = new ColorSquare();
+             emptySquare.setDisable(true);
              customColorGrid.add(emptySquare, customColumnIndex, customRowIndex);
              customColumnIndex++;
          }
          customColorRows = customRowIndex + 1;
          requestLayout();