<not_a_rant>There's a lot of talent and expertise represented here on the forum but, I doubt anyone without the same template and settings as yours can figure out the underlying CSS of the icon on this page by looking at an image.</not_a_rant>
I can tell you a whole lot about the similar icon at the top of the page because I can get my browser to that page.
It is a font_awesome icon sometimes represented in code as fa-home. On your main page, it is listed in the navMain as a class for an i tag .fas fa-home fa-sm and titled as home
It's color and status is covered using #navMain i or #navMain .home i
The template lists some six lines that MIGHT change the color!
The hover color is listed in two separate ways in THREE elements of the stylesheet. So, if you change the color on line 93, it will have no effect on the hover color listed in line 371. And, it may well be overidden by line 98 of the stylesheet that defines the hover color for the a tag.
So, we need to be able to delve into the code to see all the possibilities. The template may also use :active tags on the links to show what page you are on. https://jeandret.com/index.php?main_...order=1&page=4 shows an example where bootstrap uses the :active to let the customer know they are on page 4.
Maybe this will help in seeing why the posting tips ask for a link rather than a picture. There's no way I could discover that much info on the upper home icon without being able to open the link to your home page in a browser.
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