Change font color for tooltip, in Openlayers, Drupal 7

Im using Ol 7.x-2.0-beta11 in Drupal 7. My tooltip backgrround is black and so is my text showing in the tooltip. The text is fetched from Views. If i activate "show label" in views, the label color is white. But im banging my head to figure out how to get the title and body showing in white ? If i go to OL styles, there is a section called: fontColor. It says: "The font color for the label, to be provided like CSS" What does that mean excactly ? Ive tried to put in #FFFFFF but with no effect, so im sure to have misunderstood the "provided like css" part ? Explain this to me and how its done, in a pm and ill pay you. Thanks