This may be old news, but I never remember anyone finding out for sure how many variants for these there were. I remember one at a time, people saying there were white, then orange, and crystal versions.
So I was at Toy NK out in the Chicago suburbs and they had TONS of these! All sorts of colors! I asked how they got them and told me they were from Takara, I was like "Uhhh no" but no need to argue. Who knows.
So there are EIGHT variations of these. I bought them all as a set and decided to take some photos. As far as I know, no one has found all of them at once. If anyone wants me to pick them up some, send me a PM and we'll talk. You might be able to get them from Toynk too.
Here is the group photo. I have posted some of the photos on Flickr too.
Anyway, thought this was good information to pass one. I wonder if the Ratbat set will have crazy colors like this. These are good for anyone trying to strengthen Soundwave's army.