How do I enable the Storefront Theme Editor in Catalog?
As a Canvas Catalog admin, you can enable the Storefront Theme Editor in the Catalog Info page. The Storefront Theme Editor allows you to customize storefront brand colors, logos, and header images without the need for custom JavaScript (JS), Cascading Style Sheets (CSS), or HyperText Markup Language (HTML).
If the Storefront Theme Editor is enabled, you cannot use custom JS/CSS. Previous JS/CSS customization will be hidden.
Learn more about the Storefront Theme Editor.
Open Admin

Click the User Name drop-down menu [1]. Then, click the Admin link [2].
Storefront Settings
The Modern Storefront design can be centrally managed at the parent catalog level. This setting automatically applies to all associated subcatalogs, including inherited branding elements like logos, color schemes, and favicons, and cannot be customized at the subcatalog level.
If the parent catalog is switched to the Legacy Storefront design, subcatalogs can independently enable the Modern Storefront and manage their branding settings, allowing for greater flexibility.
To enable the Legacy Storefront, click the Use Legacy Storefront toggle.