Your logo, colours and type as tokens the site, the admin and the mobile app all read.
Branding is a set of tokens, baked per customer and read by every surface. Change the accent colour once and the site, the admin and the app change together.
When the mobile app is built, its icon, splash and theme are injected from the same tokens.
In the admin
Generate your starting point in the console, or have us build it for you; the module is already there.