title: ExtJs ComboBox: style entries
body: <p>i would like to make some of my entries in a Combobox italic.</p>
  
  <p>Is there something like the renderer of a Column or how can i achive this?</p>
  
  <p>Edit: Sorry but i didn't provide enough information, and i'm realizing that this is nonsense what i wanted do before...</p>
  
  <p>I will write some more words to this atfter i completely understand my problem...</p>