I know we can use icons from the windows library as the first character of the page title, and it will be used as icon for the page instead of the letters with background.
But i think using the letters icon and changing colors would be really good. Specially to make it easier for users to identify to what “section” a page belongs, so we can have all pages of a certain type in Green for example.
It’s specially useful since Grist menu doesn´t close alone. So user may end up with all pages open showing subpages… dozens of pages in the menu…