Specifically, "bleen" means "blue before January 1, 2000 and green on or after January 1, 2000". See also grue.
... Weiss type[?] Acrocephaly pulmonary stenosis mental retardation[?] Acrodermatitis enteropathica[?] Acrodermatitis[?] Acrodysostosis[?] Acrodysplasia ...