Change color of the frame line of the primary menu

Hi there,

I would like to change the color of the frame line of the primary menu. I use the template Wordsmith from generatepress. Is tehre any chance to change the color?

Go to Additional CSS field in the customizer and edit these two blocks of CSS:

.top-bar {
    border-bottom: solid 1px rgba(109,159,170,1.0);
}
#site-navigation {
    border-top: solid 1px rgba(109,159,170,1.0);
    border-bottom: solid 1px rgba(109,159,170,1.0);
}

Additionally, i would like to know if it is possible to insert a header image on the blog page. Just like on the other pages?

Please open a new topic for this question so we can handle one question per topic.

Thanks!