Changing color in menu and title of pages

I managed to change the color of buttons by copying code from here, but the color of the menu (the blue) and the blue to the left of page title does not change. What is the code?

Best regards, Nina

Hello there,

I hope you are doing well today.

You can use the following CSS code to change the color of the fonts by going to Appearance > Customize > Additional CSS and pasting it there.

/*Change font color*/
.single-post .entry-title, .page .entry-title {
    color: red;
/*Blue border of menu*/
#site-navigation .menu > li.current-menu-item, #site-navigation .menu > li:hover {
    border-top: 3px solid red;

Best Regards,