That would be pretty much my reply also. I am using the dark theme, which fits in with my desktop theme:
PyScripter Dark Theme « Software And Architecture
I generally work only in python, that works for me, simple and effective. Pyscripter also has the advantage (if you need it) of being able to easily test against multiple environments if needed.
Another developer here works with multiple languages so he's going down the Eclipse path (one IDE to rule them all!) which apparently also works with Python:
PyDev