Style-Scripts

I should have looked for the news page again :(

How about having a dummy point on the template for allowing a user-side chosen Javascript to be placed there automatically, which would change the CSS on the client's side only? The Javascript could be something like as follows, which is something I have as a compressed form as a bookmark:
<javascript>function() {
    var newSS, styles = '* { background: #E9E9E9 ! important; color: #000000 !important } :link, :link * { color: #3333EE !important } :visited, :visited * { color: #551A8B !important }';
    if (document.createStyleSheet) {
        document.createStyleSheet("javascript:'" + styles + "'");
    } else {
        newSS = document.createElement('link');
        newSS.rel = 'stylesheet';
        newSS.href = 'data:text/css,' + escape(styles);
        document.getElementsByTagName("head")[0].appendChild(newSS);
    }
})();
</javascript>
But I guess the template doesn't allow for this kind of hacking :(

Anyway, if and when I get annoyed with the colouring, I'll share a bookmark here for quickly changing only the text colours, since it's hard to please everyone ;)