Can't change active menu link color

Hi, I’ve been reading all the previous discussions on this topic I can find, and none of the suggestions are working for me! I’ve tried to find answers but the manuals don’t seem to help either.

My one pager site has it’s main menu stuck with one of the three links always active and always a weird orange colour.

I’ve tried putting in the following code in both the Theme Code area and the theme file editor area.

.fl-page-nav-right .fl-page-nav-wrap .navbar-nav > li.current-menu-item > a {
color: #fff;

it doesn’t help. Anyone have insight? I"m sure it’s me, I’m not an expert.