Steps to reproduce:

1. Log in to back office.
2. Go to Product catalog / Catalogs.
3. Start creating a new catalog.
4. Scroll the page down to 'Filters' section.
5. Verify background and compare with mockup.

Actual result:

See attached screenshot.

Filters section background is incorrect according to mockup.

https://projects.invisionapp.com/d/main?origin=v7#/console/22029324/467101572/comments

Expected result:

Correct background implemented.