Hi,
For the Menu Hover, paste the code below in Appearance/Business One Options/CSS Code: [Replace the color with the color of your choice]
.navbar-default .navbar-nav > li > a:hover,
.navbar-default .navbar-nav > li > a:focus {
color: #0D669E;
}
.navbar-default .navbar-nav .open .dropdown-menu > li > a:hover,
.navbar-default .navbar-nav .open .dropdown-menu > li > a:focus {
color: #0D669E;
}
.navbar-default .navbar-link:hover {
color: #0D669E;
}
.navbar-default .btn-link:hover,
.navbar-default .btn-link:focus {
color: #0D669E;
}
Portfolio (+): is an image, you need to go to image folder in wordpress root and replace the image.
For the Skills:
.section-about .p-experience {
color: #ff9d4c;
}
.progress-bar {
background-color: #ff9d4c;
}