Refactor code for speed and clarity

[UltralyticsAssistant]

This pull request refactors the codebase to improve performance and readability. Key changes include:

• Optimized various functions for faster execution.
• Simplified complex logic for better understanding and maintenance.
• Removed redundant code to streamline operations.
• Improved code structure and organization.

These changes aim to enhance the overall quality and efficiency of the code.

🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

Improved readability and efficiency by refining list and string manipulations within plotting and utility functions.

📊 Key Changes

• Streamlined list comprehensions for color assignments and point filtering.
• Simplified string formatting using f-strings.
• Replaced verbose list operations with concise, Pythonic expressions.
• Improved condition checks and border handling in image utility functions.
• Refined loop variable names and redundant code segments.

🎯 Purpose & Impact

• 🧹 Code Cleanliness: Enhanced code readability and maintainability.
• 🚀 Performance: Potential minor performance gains due to more efficient list handling.
• 🔧 Developer Experience: Easier for developers to understand and modify the codebase.