Change navigation color for only one page?

Site URL: https://tessaelaina.com

I'd love assistance in changing the Navigation color for one page. (From Black to Pale Pink) The website is: tessaelaina.com

I saw this code online but I'm unable to insert it to the Page Header Code Injection because my client doesn't have a Business Plan.

<style>
  nav#mainNavigation * {
    color: blue !important;
}
</style>

Any help would be amazing! 

(Just FYI, the site you shared is password protected.)

If you're on version 7.1, you can adjust the color of your navigation links for each of the 10 color themes. If you only want the color on that page, then reserve one of the color themes for that page and customize it in the site styles section.

7 hours ago, chillwave said:

Site URL: https://tessaelaina.com

I'd love assistance in changing the Navigation color for one page. (From Black to Pale Pink) The website is: tessaelaina.com

 

I saw this code online but I'm unable to insert it to the Page Header Code Injection because my client doesn't have a Business Plan.

<style>
  nav#mainNavigation * {
    color: blue !important;
}
</style>

 

Any help would be amazing! 

Can you tell me the page name?

Also send me your website's password.