You and your clients can have a fully white-labelled experience, which entails:
A branded portal - clients and associate coaches would see your logo and business name.
Custom Domain with SSL - the login would not be app.simply.coach, but your own domain name.
Individual coaches can also go for a partial white-labeling: add your own logo and business name so that they feature in all communication with your clients. This is available on the Growth plan.
All the emails that are sent to clients - session invites, action assignments, digital tool submission pages, etc. - will bear your logo and business name.
Currently, we don't have the ability to customize the look and feel (colours) on the platform.
Note: This feature isn't available on the Starter plan. Upgrade now!
For more details, read: How do I update / upgrade my subscription plan?