oh, actually I think I figured it out for others who might be interested  Going to the edit theme code page, under 'Assets' find the base.css and add  .header__inline-menu .list-menu li:nth-child(1) a{color: red !important;} anywhere after where it s...

like a few people posting at the end here, I am also looking for a solution to change the color of just a single menu item in the header of the dawn theme.  Here is my url https://liriodumplings.com/ ideally, the word 'tienda' would be red. Thank you...