SQL Assistant Tree Collapse/Expand Icon?

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SQL Assistant Tree Collapse/Expand Icon?

Does anyone know how to change the database tree collapse/expand icon in SQL Assistant?

I've noticed in screenshots that the default is the plus/minus, but mine shows a triangle. I've changed to every SQL Assistant theme and it doesn't change. I'm running SQLA 14.10 on Windows 7.

I've been going through the settings xml but not having much luck so far.

Thanks :-)