SHR phoneui-contacts buddy icons

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Hi.

Excuse my stupid questions, but I have looked for it on google, list, 
SHR manual and Openmoko wiki, and I can't find it. Maybe I'm not using 
the right words.

I was wondering what are the green one eyed alien that appear next to 
the contact name in Contacts list. I thought that it was an icon to 
replace with your friends photos, but I don't find where to change it.

Sorry again for the silly question.