Wordpress Color Picker Clash Fix

This is essentially a fix for this issue:

https://github.com/jdevalk/wordpress-seo/issues/91

===

Recently the Wordpress devs introduced [the standard color picker](http://make.wordpress.org/core/2012/11/30/new-color-picker-in-wp-3-5/), but wordpress-seo produces an issue while using the color picker and the plugin. 

![bildschirmfoto 2013-07-10 um 13 57 51](https://f.cloud.github.com/assets/1105871/774413/fd9f95c0-e957-11e2-81e9-ea3be2f91db1.png)

As you can see the vertical slider doesn't work anymore and I identified the corresponding CSS Code in the file css/metabox-tabs.css. 

```css
/* Component containers
----------------------------------*/
.ui-widget-content {
	border: 1px solid #dddddd;
	background: #f1f1f1;
	color: #333;
}
```

I'm trying to build a patch for that myself, but I haven't yet found an intelligent way to build a "wpseo-only" selector. Maybe modify the autocomplete script a bit?