For "Nova Alançia there's little information. There does appear to be a
flag design, as the Portuguese language Wikipedia does show one:
http://pt.wikipedia.org/wiki/Nova_Alian%C3%A7a. And there's some evidence
of existence of a flag, in that Madam Vice Mayor Ana Lúcia Ayruth Lucatto
appears to stand in front of a cloth with similar elements as the
Wikipedia image, but not matching it at
http://www.novaalianca.sp.gov.br/galeria.html.
But beyond "a field
in part white and in part blue, with a cross cotised dexter and infer formed by a red stripes that are
each accompanied on one side by a narrower stripe, and with
charges that can't be identified from the photograph", we can't describe the
flag. Their "Simbolos" page only lists arms. Peter Hans
van den Muijzenberg, 30 August 2013