UNIK has become the "Department for Technology Systems". Thus the wiki should represent the UiO design, given at http://www.mn.uio.no/its/english/. Meaning:
the new logo should be the UiO logo
background of the header is black
lighter gray for the Navbar
(and, if you can, top line with the current page name)
My suggestion is to use the ITS.php skin on praia.unik.no, being a modified copy from the GRAVID.php skin