I was trying to understand why colors are not supported in VSCode and read the comment in the ReadMe.md

Please note that all IDEs (VSCode, XCode, Android Studio, IntelliJ) do not support ANSI escape sequences in their terminal outputs. These escape sequences are used to color output. If using such an IDE do not configure colored output.

However, one of the dev_dependencies that I am using is working perfectly with colors!

Any idea why this is not working for main project?

This is the dev dependency: https://pub.dev/packages/pubspec_dependency_sorter