#207 wrong coloring when sys.ps1 is changed

If I set
sys.ps1 = 'py>'
sys.ps2 = '... '
in my sitecustomize.py, then PythonWin colors all text
in the Interactive Window blue, and performs no syntax
highlighting. One hack that fixes this is to put '>>>'
after the copyright information, e.g. replace:
sys.stderr.write("Portions %s - see 'Help/About
PythonWin' for further copyright information.\n" %
(win32ui.copyright,) )
in framework.interact with:
sys.stderr.write("Portions %s - see 'Help/About
PythonWin' for further copyright information.\n>>>\n" %
(win32ui.copyright,) )
This causes code after the '>>>' to be correctly colorized.

Ideally, the code that causes the coloring to be wrong
would be changed, but I couldn't figure that out well
enough to suggest how that might be done.