Install and use 'dexter' icon from theme

alternatively, you could use the more generic "office-address-book" supplied with many themes.

In my opinion Dexter should use a 'dexter' icon like virtually all applications do, otherwise it is impossible to tell icons apart even if the icon theme author wants to give it its own icon.

I would say using the generic icon has a couple more benefits:
* it's more likely to be included in a theme, so it would work OOTB with more themes
* it will be consistent with action icons like addressbook-new and possibly mimetypes related to contacts.

And in any case, you shouldn't have more than one contacts app installed at a time, so the argument that it's bot unique enough doesn't really hold. In addition, many theme authors will simply symlink it back to office-address-book like we already do with so many other apps ;)

I do actually hope people will use only Dexter, since I find the interface most beautiful. In that sense I can agree :-D

Is there a theme that already implements it ? For the moment, i have an ugly standard icon.

Hmm, it's present in Humanity, elementary, Oxygen and many other themes. For some reason the GNOME theme doesn't have an address book icon O.o

I guess maybe we should install "office-address-book" after all?