Did you want the Header background color to be the Blue that you have in the logo? If so, either Remove/Comment Out or change this – .front-page .site-header
to blue on line 2551
.front-page .site-header {
background-color: #000;
}
Here’s what it looks like if you change it to Blue –
.front-page .site-header {
background-color: #2185f5;
}
For the header links: Since you changed your Header background to Blue, and your links are blue, you’ll need to change the Hover code so it shows up as a different color. If you add this to your CSS, it will change it to the Yellow color that you have in your logo.
.site-header .genesis-nav-menu a:hover {
color: #f9dd10;
}
You can change it to whatever color you need.
Let me know if this helps.