Need assistance with ckeditor plug-in

HI all,

I've managed to install and get ckeditor appearing in Perch as I have normally with other sites recently, however, I've noticed that the config.js file has changed recently.

For some reason, the colour palette is missing and I can't get custom colours to appear at all using code that has worked previously. Can anyone assist?

New config.js file looks like this:

/**
 * @license Copyright (c) 2003-2015, CKSource - Frederico Knabben. All rights reserved.
 * For licensing, see LICENSE.md or https://ckeditor.com/license
 */

CKEDITOR.editorConfig = function( config ) {
    // Define changes to default configuration here.
    // For complete reference see:
    // https://docs.ckeditor.com/#!/api/CKEDITOR.config

    // The toolbar groups arrangement, optimized for two toolbar rows.
    config.toolbarGroups = [
        { name: 'clipboard',   groups: [ 'clipboard', 'undo' ] },
        { name: 'editing',     groups: [ 'find', 'selection', 'spellchecker' ] },
        { name: 'links' },
        { name: 'insert' },
        { name: 'forms' },
        { name: 'tools' },
        { name: 'document',    groups: [ 'mode', 'document', 'doctools' ] },
        { name: 'others' },
        '/',
        { name: 'basicstyles', groups: [ 'basicstyles', 'cleanup' ] },
        { name: 'paragraph',   groups: [ 'list', 'indent', 'blocks', 'align', 'bidi' ] },
        { name: 'styles' },
        { name: 'colors' },
        { name: 'about' }
    ];

    // Remove some buttons provided by the standard plugins, which are
    // not needed in the Standard(s) toolbar.
    config.removeButtons = 'Underline,Subscript,Superscript';

    // Set the most common block elements.
    config.format_tags = 'p;h2;h3;h4;h5;pre';

    // Simplify the dialog windows.
    config.removeDialogTabs = 'image:advanced;link:advanced';

};

All I want to do is ensure the colour palette appears and to be able to add custom colours. I always used to do this using the following (which is still being suggested as a solution) - I'm sure I've missed something simple here but unsure what I've done wrong - any help appreciated:

    config.colorButton_colors = '948054,9D9D9C,231F20'; 

Important info from diagnostics:

SUMMARY INFORMATION

Perch: 2.8.30, PHP: 5.5.30, MySQL: mysqlnd 5.0.11-dev - 20120503 - $Id: 15d5c781cfcad91193dceae1d2cdd127674ddb3e $, with PDO Server OS: Linux, cgi-fcgi Installed apps: content (2.8.30), assets (2.8.30), categories (2.8.30), perch_blog (5.0), perch_forms (1.8.3) App runtimes: <?php $apps_list = array( 'content', 'categories', 'perch_blog', 'perch_forms' ); PERCH_LOGINPATH: /admin Image manipulation: GD Imagick PHP limits: Max upload 64M, Max POST 64M, Memory: 320M, Total max file upload: 64M F1: 2edba60ed1f613d6dd804feb202456a2