Site design guidelines

Going through all the effort of giving the company who will code and implement this site a PDF file with information on color, typography, spacing, dimensions etc. A lot of work, as I have designed quite a few different templates. It's also something I need to do upon their request. Now I'm wondering if this time it will help, and if they will stick to it. Last time they didn't, they did not look at my Photoshop files and screwed up so the project never ended up in our portfolio because of this. The coding and implementation is really out of our hands. The client just has a contract with them. This project will also not end up in the portfolio, because this time we're not allowed to, but this was something we knew upfront.