Thanks for the replies. I’m no longer quite so baffled.

@cooby
By 3D, as in three dimensional like the HDTVs and Blu-ray, I mean the shaded nature of the graphic by use of shadows suggesting depth (extended, sunken) as opposed to a featureless flat graphic, 2D.

Your comment about work flow makes sense.

@Ondrej
I had the nature of the buttons reversed in that I considered light grey denying access.

So now I find when in Deny selected mode and Block All Apps is light grey, individual apps set to dark grey are denied access.

But in testing when I verified dark grey settings with the browser and gmail that blocking was enabled, I still see “You have no history yet” in the Firewall log. That’s not a deal breaker as I actually prefer to keep logging disabled.

Cheers!