I edit the font color of the menu in the header, changing settings in / * Title Area:
genesis-nav-menu li.highlight a: hover :: before {color: # 000;
.front-page .genesis-nav-menu> .menu-item> to {color: # 000;
.front-page .site-header.light .genesis-nav-menu> .menu-item> to {color: # 000; and it changed the color well. But now the sub menu Appearance / customize / frontpage background image does not enable the section nor any of the same level to customize the theme.