When the single post is selected, you should be able to use current_page_parent and style it similarly to your current_page_item.
I see no current_page_parent in the source. Is a snippet of code required anywhere to make WP output this selector? Of do I have to enable that new and fancy admin menu-thingy in functions.php`?
I didn’t think so, I just used wp_page_list() and it was generated automatically.
I did set a page called blog and then under reading choose a static home page and then chose the blog page to display posts.
Maybe this is what’s needed?
Perhaps also the theme you are using is overwriting it.
Can you provide a link to your site?
I believe that did the trick. I now see the current_page_parent. On to styling. Thanks, Christine 🙂