query GuidelinePageSectionsElementsAssetSettingsAssets {
  guidelinePage(id: "…") {
    sections(limit: 25, page: 1) {
      items {
        elements(page: 1, limit: 25) {
          items {
            ... on BrandEssentialsColorBlock {
              assetSettings(page: 1, limit: 25) {
                items {
                  assets(page: 1, limit: 25) {
                    items {
                      __typename
                      previewUrl
                    }
                  }
                }
              }
            }
          }
        }
      }
    }
  }
}