Board Thread:Script Suggestions/@comment-26923519-20170721082649/@comment-5301680-20170728105426

Then add the css to your MediaWiki:Wikia.css and the following code to your MediaWiki:Common.js:

 toolbar = skin == 'oasis' ? $('.wikia-bar .toolbar .tools') : $('.portlet#p-tb .pBody > ul'); $(toolbar).append(   $(' ').append( $('').attr('href','').text('Invert Color Brightness').click(function {           $('body').toggleClass('body.theme-bright')        }) ) );