Update ColorExtension.php

[Phill-TheComplianceGuys]

What is the reason for this PR?

• [ ] A new feature
• [x] Fixed an issue (resolve #ID)

Author's checklist

• [ ] Follow the Contribution Guide
• [ ] New features and changes are documented

Summary of changes

Review checklist

• [ ] All checks have passed
• [ ] Changes are added to the CHANGELOG.md
• [ ] Changes are approved by maintainer

[Phill-TheComplianceGuys]

added use Faker\Extension\Extension;

[bram-pkg]

Why is this an issue? They are in the same namespace, right?