Radio butto to enable/disable combo box in Tkinter

[deanhystad]

You might want to put your add work and add materials windows in their own files. Import these files just like you import other Python modules. I would write a class around these windows, but putting them in their own "module" offers much of the same benefits.

If you insist on using color you can do a lot better than setting the background color for every single widget. This talks about styles/themes to tkinter.

https://tkdocs.com/tutorial/styles.html