Message 120785 - Python tracker

Whenever I run a program in Python 3.1.2 (windows), the color coding disappears. print() is no longer purple, def is no longer orange, etc. It all turns black, and there doesn't seem to be a way to repair this. I've installed and uninstalled Python 3.1.2 several times and it's done nothing. Loading previous programs also causes this. Only if I am making a new program is the coding separated by color. Can anyone help?