function getOpacityValues(contrastType) {
      switch (contrastType) {
        default:
        case 'strongLight':
          return STRONG_LIGHT_CONTRAST_OPACITY;
        case 'light':
          return LIGHT_CONTRAST_OPACITY;
        case 'dark':
          return DARK_CONTRAST_OPACITY;
      }
    }
@param {'dark'|'light'|'strongLight'} contrastType
@return {{secondary: number, divider: number, hint: number, icon: number, disabled: number}}