Product and version
FileMaker Pro 14.0.4
OS and version
In inspector, you can't change "Text" nor "Paragraph" parameters for button bar (of course, same in formatting bar)
How to replicate
Go to layout mode, make a button bar, select it after completing definition, then see "Appearance" tab in inspector
Select each button bar segment.
I want to set them in button bar as default value of segments in the button bar.