The solution which Krithiga suggests will also work but in that case, you need to make the changes in all the TextInput fields manually. Ex.Open the section : pyCaseSummary and then the TextInput Property and its Presentation change the Control Format to your new setting and it will work.
As from your requirement, I think that you want all the fields in the Current Dynamic layout to be displayed as red. If you make the change at the dynamic layout level it will change for all the fields used in this.
Attaching the screenshot for the same.
Let me know if this helps, for now Formats does not have text level setting,and so inline style needs to be set.