ESTK question: setting font properties in dialog

I have been creating tons of scripts for FrameMaker using ESTK and have checked all the available documentation, but did not find any specific info on the creation properties of dialog items. Is there any document anywhere describing which properties can be set and which values are valid settings? I have tried the obvious ones (e.g. setting text color to red) but nothing seems to work. Without specific info this is an impossible task to achieve, where it really should be very simple.

Thanks in advance for a pointer to detailed information.