Yep John, you are right on with your observation. Your color scheme is black=on, blue=off. I have used CSS to change my color scheme, maroon=on, light blue=off. We both do rely on the color scheme to see hidden items.
But our discussion has focused on the use of the extra words "hidden from students" and 1) if these are useful, 2) if the wording should be a setting to show or not show the wording, and 3) why the wording is removed when a topic is hidden?
My position is:
#1, yes, they seem to be okay. Doesn't bother me. but I understand that it might be bothersome to some folks.
#2, maybe so, but if so, probably the setting should be at the course level. The default should be on (for accessibility reasons) but the instructor can turn it off.
3#, the wording should display even when a topic is hidden. (Again, this was my main point for making my video, to illustrate that the words disappear when a topic is hidden.