Make icons for page groups more contrasting

[zenoachtig]

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After

[changeset-bot]

🦋 Changeset detected

Latest commit: 6d6b4af

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
gitbook	Patch

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[github-actions]

Summary of the deployments:

Version 1

Version	URL	Status
Latest commit	https://131d4875.gitbook-open.pages.dev	✅
PR	https://pr3286.gitbook-open.pages.dev	✅

Version 2

Version	URL	Status
Vercel	https://gitbook-v2-ny9scbi94-gitbook.vercel.app	✅
Cloudflare	https://62eda565-gitbook-open-v2-preview.gitbook.workers.dev	✅

Test content

Site	v1	2v	2c
GitBook	https://131d4875.gitbook-open.pages.dev/gitbook.com/docs	https://gitbook-v2-ny9scbi94-gitbook.vercel.app/url/gitbook.com/docs	https://62eda565-gitbook-open-v2-preview.gitbook.workers.dev/url/gitbook.com/docs
E2E	https://131d4875.gitbook-open.pages.dev/gitbook.gitbook.io/test-gitbook-open	https://gitbook-v2-ny9scbi94-gitbook.vercel.app/url/gitbook.gitbook.io/test-gitbook-open	https://62eda565-gitbook-open-v2-preview.gitbook.workers.dev/url/gitbook.gitbook.io/test-gitbook-open

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Build	Status	Details	Updated (UTC)
customers-v1 (Inspect)	👍 Changes approved	18 changed	Jun 8, 2025, 3:44 AM
customers-v2 (Inspect)	👍 Changes approved	94 changed	Jun 8, 2025, 3:46 AM
default (Inspect)	👍 Changes approved	12 changed	Jun 8, 2025, 3:47 AM
v2-cloudflare (Inspect)	👍 Changes approved	12 changed	Jun 8, 2025, 3:47 AM
v2-vercel (Inspect)	👍 Changes approved	12 changed	Jun 8, 2025, 3:48 AM