extending left side navigation menu color to reach footer color

Great! I can see it now.

Here is a CSS you may try adding in Appearance > Customize > Additional CSS:

div.is-left-sidebar {
    background-color:#debc81;
}

Hope this helps! :)

awesome, that worked!! thanks so much :)

now to solve the issue of what is showing at the url vs what is seen when working on the site ...