How to change the colour of the first link in my nav menu only?

I'm trying to change the colour of the first menu link in my site's main navigation. The site isn't live yet so I can't link you. 

The nav looks like this:

Shop - Guide - FAQ - About - Contact

I want to change Shop to this colour:  #C2B277

I can't figure out how to target it using nth-child, nothing seems to work. Any help would be very much appreciated, thank you!

You can setup password & share url.

Difficult to help without checking url

https://wellworndenim.squarespace.com

password: wellworndenim

Thanks a lot!

8 hours ago, wellworndenim said:

https://wellworndenim.squarespace.com

password: wellworndenim

Thanks a lot!

Add to Home > Design > Custom CSS

header#header [href="/shop"] {
    color: #c2b277;
}

7 hours ago, tuanphan said:

Add to Home > Design > Custom CSS

header#header [href="/shop"] {
    color: #c2b277;
}

 

That's perfect, thank you so much!

May I ask you one more please?

I'm trying to set it so when I hover over the individual social icons in the footer, they change to opacity 1.

I have this code:

.social-custom {
  text-align: center;
  font-size: 3em;
  word-spacing: 20px;
  opacity: .5;
  transition: .5s
}

.social-custom a:hover {
  opacity: 1;
}

<div class="social-custom">
<a href="tel: 0777 777 777"><i class="fab fa-whatsapp"></i></a>
<a href="https://www.etsy.com/uk/shop/wellworndenim"><i class="fab fa-etsy"></i></a>
<a href="https://www.instagram.com/wellworndenim/"><i class="fab fa-instagram"></i></a>
</div>

The above is not working.

If I put:

.social-custom:hover

Then all three of the icons have the desired effect upon hover, but for some reason I cannot target individual icons. This works in standard CSS, but I'm obviously missing something with SP code...

Cheers!

Figured it out, posting just in case anyone searches this.

The dimmed opacity needed to target the link directly too, ie:
 

.social-custom a {
  opacity: .5;
 transition: .5s
}

.social-custom a:hover {
  opacity: 1;
}