I am using CSS to increase the field value size at entry as there is no setting in theme/styles (in new designer) for the field value.  The only settings I'm seeing are label text, body text, text above/below field ant tool tip.

I don't really need the font to be larger at time of entry.  I just need it to be larger on the saved form.

What CSS exactly are you using? If you want to adjust the size on the saved copy only, then you need to use CSS selectors that work with that formatting.

For example, when a form is read only or saved to a repository, the input elements are all converted to non-interactive display elements like div and span.

If your CSS is something like

.myField input

It won't work because the display version is not an input element

Instead, you would use something more like

.myField .cf-field > div

The structure of the new forms is substantially different so it may take some trial and error to get the desired effect, but if you create a User Task, mark it as read only (in the user task settings, not the form itself) then it will display a version more similar to the saved copy.

You can then start a test instance and assign that task to yourself to inspect the html structure of the "display only" version and test the CSS.