Hello,
In order to create a new text style or edit existing ones you can go in
“aA Text Styles” tab from the “Theme” page.
Then you can go in the “Dialogs” page and set the attribute for the “Text Style” of the control property to the one you had previously defined.
If your prerequisites are “Feature-based” ones, unfortunately due to an Advanced Installer issue the text color for the “PrerequisitesDlg” is not set (it only remains black). A fix will be available in a future version of Advanced Installer, thank you for bringing it to our attention. Until then, unfortunately there is no workaround available.
If your prerequisites are “Pre-Install” ones, then I'm afraid we don't have support to edit the text style of the pre-install prerequisites wizard dialogs.
If you have other questions, please let us know.
Best regards,
Dan