// Get the editor instance
          var editor = $("#editor").data("kendoEditor");

          // Close other dropdowns when clicking your custom tool
          $("#" + controlID).on("click", function () {
            var foreColor = editor.toolbar.element.find("input[data-command='foreColor']").data("kendoColorPicker");
            var backColor = editor.toolbar.element.find("input[data-command='backColor']").data("kendoColorPicker");

            foreColor.close();
            backColor.close();
          });