How can I change the colour of my input blocks to the same colour as my form background?

Hi, I would like to change the colour of my input blocks so that when I embed them into my Landing Page they look cleaner. Is this possible and how can I do it please?

For example, on the picture below I would like to make the white element a different colour but I can't figure out how to do it with the form editor. Thanks!

It is not possible to change the background color of the cards. With Card Forms, you can only change the form's background color.