@Override
    public void changedVisibility(final IViewNode<?> node, final boolean visible) {
      new SwingInvoker() {
        @Override
        protected void operation() {
          showNode(node, visible);
        }
      }.invokeAndWait();
    }
Colorizes a part of a line of the node in a given color.

@param line The index of the line.
@param position The index of the first character to colorize.
@param length The number of characters to colorize.
@param color The color used to colorize the characters.
java/zylib/src/main/java/com/google/security/zynamics/zylib/yfileswrap/gui/zygraph/nodes/ZyGraphNode.java