For some reason Toolbar Button Focus has no less than 3 options to set a border colour

https://snag.gy/v8NnGb.jpg

So what are these three different colours and why do they not have a better description that allows you to differentiate?!

Also - when I click on the button I presume it has focus

So why does it ignore all the Toolbar Button Focus colours?

https://snag.gy/cWBFoN.jpg

And if I set Toolbar Button Focus Pressed colours in case it's using that... well that doesn't work either

https://snag.gy/TQ4U8e.jpg

help?