user_formats.py

This module enables the user to change color schemes app-wide instantly without restarting the app, and includes the Colorizer class which displays the color scheme controls in the Preferences > Colors tab. Your favorite color schemes can be made a named theme. You can create your own color schemes in seconds. Another class allows the user to change font family and font size instantly. A preview area lets the user see what the font will look like before applying the font change.