Adblock. Add css class or remove attribute from element : <p>Is it possible to add css rule to an element at some page by adblock? 
Something like this</p>

<pre><code>#myElement {
    color: white !important;
}
</code></pre>

<p>I tried to find a script that updates style of this element on page load but it seems that it is not a best way.  </p>
