I've had lucid dreams before,and one brief OBE. Also I've two really strange events, while awake, that caused me to see everything around me in "photo negitive" way. Both events lasted about 5 sec, but seemed like a long time! I remember sqeezing my eyes closed then opening them, trying to clear my sight. It was cool, but strange. The first time happend right after I woke up at night & sat on the edge of my bed. within one or two blinks, my sight was goofy!
The second time happened while I was at lunch, and reading a religiuos book. It was making me think in awe of just how immence the created world is when Pow! Goofy eyesight! lol
Perhaps, in my thoughts, I sliped into a dream state.
I'm going to practice and study lucid dreaming & work on having OBE's. They were super cool. So few so far though . =(