When you ARE the standard...

https://lemmy.today/post/39732188

In the screenshot, it looks more like the essential toggle is greyed out because it can’t be toggled, while the other two can be and would likely turn blue or something other than grey to indicate they’re on.
yup, you’re right, they turn a very dark shade of blue (that looks quite similar to the grey though)
It’s standard practice to make these as confusing as possible.