I'm thinking about creating a Python file using PyQt6, focusing on a dark-blue theme. The app will have a button-driven interface with menus and functions for converting between binary-coded decimal (BCD) and binary values. Users can input numbers using a QLineEdit for integers ranging from 0-255. I want to include two buttons: "To BCD" for converting to BCD and displaying results, and "From BCD" for conversions back to binary. I'll make sure to implement a cohesive design while using necessary functions. I'm thinking it would be best to reuse the styling from earlier discussions and include instructions like "pip install PyQt6" as part of the setup. I want to write a self-contained script that clearly presents the code. It's essential to use proper triple backticks with a language specifier to format the Python code correctly. I'll ensure that only the code is wrapped, not the prose, and might even wrap any embedded code as needed. Let's proceed with crafting the final answer! Code in Github.