How to extend Internal Supplier Pages to Redwood Format?

Summary:

My team is working on converting several procurement pages to the Redwood format. I was able to get the external supplier link to be formatted, but the Supplier pages within Procurement are not (Procurement>Suppliers). The Purchase Requisitions screen also has the updated formatting. Is there a role I need or something I need to opt-in to other than Next Generation User Experience for Supplier Self-Service Registration? I am trying to get the Redwood formatting working for: Manage Suppliers, Register Suppliers, Manage Registration Requests, Import Suppliers, Merge Suppliers. Once again, the Purchase Requisitions screen in Procurement has the Redwood format,