reversed vision on braitenberg sensors in py

I just downloaded the latest version of breve. Having quite some fun so far, great program(and a lot less expensive than letting basic stamp bots fall of tables).
Anyway the Braitenberg sensors in python seem to have reversed vision. They respond to lights behind the vehicle instead of lights in front. I was working on the braitenbergtemplate in python, when my vehicle didn't respond to anything. Thought I made a mistake when I noticed it did respond to lights behind it. So checked it with the py version of the agressor demo, but that did the same thing.
josje