I can't find a "focus color" property. What I would like to do is change the color from blue to black. Best would be to do this as a CSS item, second best is going to each of the many fields and adding the code and worse is you can't do it at all.
I'm not an expert. But, I think that you need themeColor. If you make the change in the Application tag, then the focus color will change for the whole project. If you want only one button's focus color changed, then change the themeColor in that specific button's tag.
Thanks for the pointer. Sorry about such a late reply, but our "SmartFilter" on the internet blocked all Adobe sites till now.
[edit - that worked, thanks again]