You can use the Primary Widget area if you don’t want to use the “header-right” widget area. You can enable this in your WordPress menu. The Primary Widget menu will show up in the same place as the example link you posted above.
If you want to change the sidebar links, you can add something like this to your css file –
.epik-orange .sidebar a {
color: #fff;
}
You’ll be able to adjust the color to whatever you need.