Branding what your customers see — Override it on one form

The form designer's Look section can differ from the account brand in three ways and no more: Use a different accent here, Show the account logo off, and the after-submit redirect. Those are the pieces a single form plausibly needs of its own; anything further would be a second branding system to keep in step with the first. A form that overrides nothing simply follows the account, so changing the account brand moves every form with it.