Fix bug: menu items vanish when combining ahiqar website white mode and tido darkmode

Before the fix, the color of the text in the navigation item lists would be white, if the dark mode of the tido is set. The dark mode of tido would force the color in the body to be white - the color of menu items would become white as a result. For the nav items, we want their color to be dependent on the color of the ahiqar website. Thus, when the ahiqar website is dark mode, make the text color greyish. When the ahiqar website is light mode, make the text color close to dark color.