Basically, [[http://www.glassescorp.co.uk/prescription-glasses/ray-ban-glasses-rx5228_black-2000.html these]] or [[http://www.glassescorp.co.uk/prescription-glasses/ray-ban-glasses-rx5228_dark-havana-2012.html these]] ? I've got very dark brown hair and olivey skin. I prefer the idea of tortoiseshell but I think I do suit the black frames...what do you think?