Change colour of ONE item on header

Site URL: http://charlielangton.com

Hi,

Can anyone please help me with a code to change the colour (I want a dark/strong red) of the STORE item on the headings on this website? The rest I want to keep black as it is.

Thank you very much in advance

.header-nav-item a[href="/store"]{
    color: darkred !important;
}

Use this code, for both desktop/mobile

/* nav store item color */
.header-nav-item a[href="/store"], div.header-menu-nav-item [href="/store"] {
    color: darkred !important;
}