Keynote: change the font of an equation

I'm using the built-in equation tool in Keynote. Is there a way to change the font used by default in Keynote? Also, I see that when I try to use text in the equation via \text{} the font is in bold mode. How can I change that? Note that a relevant Keynote question has been asked here . As an example for the font change see this picture As an example for the bold text see the picture which was generated by \Gamma \text{ is fixed} Note that this question is not a duplicate of this one . All of the options mentioned in the linked question are such that simply add a characteristic to the font (italics, bold, roman etc.) but they do not change the font.