chore: not adding by default the MapColorScheme

[kikoso]

The following PR removes the default value for MapColorScheme, which conflicts with the tile mode.

---

Before submitting your PR, there are a few things you can do to make sure it goes smoothly:

• Make sure to open a GitHub issue as a bug/feature request before writing your code! That way we can discuss the change, evaluate designs, and agree on the general idea
• Ensure the tests and linter pass
• Code coverage does not decrease (if any source code was changed)
• Appropriate docs were updated (if necessary)

Fixes #601 🦕

[googlemaps-bot]

Code Coverage

Overall Project	21.77%	❌

There is no coverage information present for the Files changed

[googlemaps-bot]

🎉 This issue has been resolved in version 6.0.1 🎉

The release is available on:

• v6.0.1
• GitHub release

Your semantic-release bot 📦🚀