Move primer/primitive deprecated colors to Primer CSS

[langermank]

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• Yes, this PR does not depend on additional changes. 🚢

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[github-actions]

Hi! This pull request has been marked as stale because it has been open with no activity for 60 days. You can comment on the pull request or remove the stale label to keep it open. If you do nothing, this pull request will be closed in 7 days.