Here’s a quick walkthrough of where each part of your form pulls its text styling from. These styles can be modified through your Stack Design → Headings & Paragraphs.
The form field size (which takes after the Paragraph text styling) isn’t customisable at the moment. They’re locked at 15px as this follows best website practices.
Please Note: The text colour and sizing for form dropdown items cannot be customised. The text colour will be grey (refer to the example below).
If you are on a Pro plan, you will have access to more form settings, like Heading sections. This takes after the Small heading text styling.
If you do have any questions at all, please reach out to the Customer Support team at support@rocketspark.com.