However, it gives it a black background instead of the usual green on my site. I tried changing the background transparent to the hex color number and this didn’t work. Nor did changing backgroundColor=yellow to green. Not that yellow was showing anywhere anyway.
@Garland_Coulson, I don’t see a black background when I view your site in Safari:
I quite like the White/Gray scheme of the form in your page, as it causes the form to stand out from the rest of the page. It makes it clear to me as the user that this is a form within your page, and not just more text on the page that blends in.
That’s just onion, though.
Airtable does not offer options for changing the background colors of the form itself, if that is what you are asking about. You can add a logo/background to the header portion of the form (the part that shows with a white background), but you cannot change the color of the section with the gray background.