Sorry to dig up such a old thread, but I wish to thank everyone for the help rendered!
My computer had crashed shortly after I created this thread, and I rather took my time in restoring it back to normal.
I'm not a pervert, I'm a cosplayer.
I asked this question because a friend spotted a photographer at March's Cosplay Matsuri taking a photo of me with the 'x-ray lens' I mentioned earlier, which he identified by the green tint of the photo on the screen. Therefore, I guess that it should be the Sony Nightshot that was mentioned.
The same friend informed me that while white will reflect the light and thus negate the x-ray effect, black will be see-through. Is that true? I suppose that since I was wearing about three layers of clothing, I should have less cause to worry.
In case any of you were wondering, I didn't manage to identify the photographer, but perhaps my friend will remember if he sees him again. It ended with my friend showing the photographer the middle finger and scaring him off.