Change Navbar Page Text Color

Hi, new to SiteOrigin and WordPress. I’m using SiteOrigin CSS plugin on a Vega theme to change the NAVBAR background and logo & text colors. Able to change the background color to black and the logo text to white. But the page text remains black and is hidden in the background and only changes to white when I hover. How do I override the page text color of black making white and visible in a black background? Thanks!

.navbar.navbar-custom.navbar-fixed-top {
background-color: #000000;
color: #ffffff;
}

a.navbar-brand.text-logo {
color: #ffffff;
background-color: #000000;
}

.navbar-custom .nav > li > a:hover {
color: #ffffff;
}

.navbar-fixed-top .navbar-collapse {
color: #ffffff;
}