How can I alter the color of a specific tab on my main menu?

[BulkVacuum]

I need help with changing the color of the "Shop by Brands" tab on the main menu of my website: www.bulkvacuumsupplies.com. That's the only tab that I want to change the color. I tried using the suggestions from other people with the same concern as mine but they just don't work. Thanks in advance!

[Made4uo-Ribe]

Hi @BulkVacuum 

Do you mean change the font color? If it is, check this one.

From your Shopify admin dashboard, click on "Online Store" and then "Themes".

Find the theme that you want to edit and click on "Actions" and then "Edit code".

In the "Assets" folder, click on "base.css, style.css or theme.css" file, depending on which file your theme uses to store its CSS styles. At the bottom of the file, add the following CSS code:

#section-header > div > div:nth-child(1) > nav > ul > li:nth-child(11) > a {
    color: red;
}

And Save. 

Result:

Please don't forget to Like and Mark Solution to the post that helped you. Thanks!

[BulkVacuum]

I'm sorry for the confusion. How about if I want to change its background color?