Need to add a color button to CKEditor in order to alter a table cells background color?

Hi,
I am trying to work out how to add a color button to CKEditor in order to alter a table cells background color?

Any ideas on how to do this?

http://sdk.ckeditor.com/samples/table.html
http://ckeditor.com/addon/tabletools

My setup is as below but no button appears?

<script>
CKEDITOR.replace( 'content' );
CKEDITOR.config.width ='<?php echo $ck_width; ?>';
CKEDITOR.config.height='500px';
CKEDITOR.config.skin = 'moonocolor';
CKEDITOR.config.extraPlugins = 'colordialog';
CKEDITOR.config.allowedContent = true;
CKEDITOR.config.filebrowserBrowseUrl = "/admin/ckeditor/plugins/kfm/";

CKEDITOR.config.toolbar = [
{ name: 'document', groups: [ 'mode', 'document', 'doctools' ], items: [ 'Source','-','Save','Maximize','ShowBlocks' ] },
{ name: 'clipboard', groups: [ 'clipboard', 'undo' ], items: [ 'Cut', 'Copy', 'Paste', 'PasteText', 'PasteFromWord', '-', 'Undo', 'Redo' ] },
{ name: 'editing', groups: [ 'find', 'selection', 'spellchecker' ], items: [ 'Scayt' ] },
{ name: 'links', items: [ 'Link', 'Unlink', 'Anchor' ] },
{ name: 'insert', items: [ 'Image', 'Table', 'BGColor', 'HorizontalRule', 'SpecialChar' ] },
{ name: 'imamges', items: [ 'Image','Flash','Table','HorizontalRule','Smiley','SpecialChar','PageBreak'] },
{ name: 'others', items: [ '-' ] },
'/',
{ name: 'basicstyles', groups: [ 'basicstyles', 'cleanup' ], items: [ '-', 'RemoveFormat','BidiLtr','BidiRtl','TextColor','BGColor' ] },
{ name: 'paragraph', groups: [ 'list', 'indent', 'blocks', 'align' ], items: [ 'NumberedList', 'BulletedList', '-', 'Outdent', 'Indent', '-', 'Blockquote' ] },
{ name: 'styles', items: [ 'Styles','Format','Font','FontSize','Bold','Italic','Underline','Strike','JustifyLeft','JustifyCenter','JustifyRight','JustifyBlock' ] },
{ name: 'about', items: [ 'About' ] }
];
</script>

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