I don't. But I am, and was at the time, aware of memory being tainted by witness sharing their accounts with each other. It's common knowledge. The spheres I saw could not hold any creatures as they where quite small, so i think extraterrestials are out of the question, although i do belive in extraterestrials, but did not at the time.
Our accounds did indeed differ somewhat. I said they where green and one of my friends said it was white. Another one said it was yellowish.
Also size, speed, altitude and such differed somewhat.