refactor(preset-tailwindcss): rename preset varlet colors

[chouchouji]

Checklist

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• [x] Fix linting errors
• [x] Tests have been added / updated (or snapshots)

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Name	Status	Preview	Comments	Updated (UTC)
varlet	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Mar 23, 2024 0:46am

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[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 92.78%. Comparing base (a33e26f) to head (b6c83d4).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## dev #1548 +/- ## ========================================== - Coverage 92.81% 92.78% -0.03% ========================================== Files 305 305 Lines 7167 7167 Branches 1780 1780 ========================================== - Hits 6652 6650 -2 - Misses 449 451 +2 Partials 66 66 ```

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