[FMX2004] Tree component question

I am using the Tree component to display a hiearchy of links I have defined in an xml document. I followed the example shown in the documentation to do this and it works fine.

Now I’m trying to tweak the appearances further… My question is how to make a specific leaf appear inactive… I see that the Tree is derived from the List class which has a styles such as selectionDisabledColor and disabledColor
which leads me to believe this is possible. The List class is derived from the ScrollSelectList class and i can’t find any documentation on this class.

Any advice would be great! thanks a lot.