Is it possible to detect all style sheets on the current page with a click of a ‘disable/enable CSS’ button and disable them on the first click so none of the styling applie
Here is another method that you can try to do that thing.
$('*[rel=stylesheet]').attr('disabled', 'true');
$('link[rel=stylesheet]').attr('disabled', 'true');
and in other hand you remove that attribute
$('link[rel=stylesheet]').attr('disabled', 'false');
$('*[rel=stylesheet]').attr('disabled', 'false');