This is not a support request, but rather a solution that I thought would be useful to share with the GF community.
Anyone using an Elegant Themes WP theme is probably familiar with the built-in contact form, which is styled to match other theme elements. If you want your Gravity Forms to match the ET form style, here is a block of CSS I wrote to make that happen:
It hasn't been tested in all ET themes, but definitely works in 'Nova' and 'My Product'. It should work with most, if not all, other ET themes as well.