What tools can I use to better indicate different parts of a form besides the page break and divider?

I have one part of the form that is for caregiver information, another for clinician information. Is there a way to make them different colors?

You can make use of Section Collapse element to group the fields and collectively show/hide them.

As for putting a background color, that can be done with a Custom CSS. If you're planning to apply the background color per section, then I suggest you use Section Collapse element so it would be easier to assign a color per section.

How-to-Inject-Custom-CSS-Codes

Notice that by default, the Section Collapse element creates like a clickable header that enables the section to be shown/hidden. If you don't want that to be displayed, but still want to group the fields, then you can set the Section Collapse's properties to

Section Visibility = Visibile

Button Visibility = Hidden

Let us know if you need further assistance.