Green’s Dictionary of Slang

(N.Z. prison) a cell used for suicidal inmates; the walls are painted a supposedly soothing pink.

2001

D. Looser Boobslang [U. Canterbury D.Phil. thesis] 85/1: harmony room n. a suicidal cell for ‘at­ risk’ inmates, with walls painted pale pink.

(N.Z. prison) a wing housing non-violent inmates, few if any gang members, etc.

2001

D. Looser Boobslang [U. Canterbury D.Phil. thesis] 85/1: harmony wing n. a wing of the prison in which there are no gang-members, usually containing a peaceable mixture of mainstream and segregation inmates.