Set the colours, theme options, and logo in one call; an alternative to Set colours and theme. The saving user is taken from the token, so there's no user_id field. Send JSON for theme options only, or multipart/form-data with logo_image.

Prerequisites: a bearer token and the company_id of the account you're theming. To upload a logo: a JPEG or PNG up to 400 KB.

Authentication: Partner or Account token. company_id must be inside your own account tree (a Partner token reaches any account under the partner, an Account token only its own); otherwise 422.

Rate limit: none.