Hello acrcornelius,
Thank you for your question about accessing the BoldGrid theme files. Once you have gone through the Inspirations process and selected a theme, that theme will be added to the conventional WordPress themes folder.
You can access this folder by following this path forward from the root directory of your site: /wp-content/themes/.
You will notice that the BoldGrid themes are appended with boldgrid- before the theme title. For example, if you chose the Pavilion theme, you will see a directory called boldgrid-pavilion. You will be able to view and add to the files in that directory.
Best,
Christopher M.