How to change subnav dropdown field color on blog post page only?

Hey @cinstudio!

You can use the following snippet to change that folder bg color if you're in Brine, 7.0:

.Header-nav-folder {
  background-color: black !important;
}

Or this other one if you're in 7.1:

.header-nav-folder-content {
  background-color: black !important;
}

Assuming that you'll be applying this only for the blog page – if you're adding the code to the Custom CSS window – you can include the page ID in the snippet if you need to, like this:

#page-id-goes-here .header-nav-folder-content {
  background-color: black !important;
}

(Same thing for 7.0, but with the corresponding selector from before).

Hope this helps!