feat: update color system

[loki-class101]

• Adjusted the surface and error text to reduce their prominence.
• Updated the reference color and the theme tokens.

[vercel]

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Name	Status	Preview	Comments	Updated (UTC)
opensource	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jul 8, 2024 11:57am

[coveralls]

Pull Request Test Coverage Report for Build 9838958701

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

• For more information on this, see Tracking coverage changes with pull request builds.
• To avoid this issue with future PRs, see these Recommended CI Configurations.
• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 77.592%

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Totals
Change from base Build 9838943489:	0.0%
Covered Lines:	4125
Relevant Lines:	5174

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💛 - Coveralls