This morning I had a pretty cool experience:
I felt that I had woken up, but even though I had my eyelids closed, I could actually see something above me - it isn't really that important what it was, but it looked kind of like a combination lock inside a small space that was illuminated by a dark blue light.
This was actually a pretty vivid sight as well, and the fact that I could see it even though my eyelids were shut was a very bizarre feeling.
Then when I suddenly started thinking for myself "hey... am I dreaming?!" everything went black again and I opened my eyes and was awake.

Do you have any idea what this could've been?
Was it a part of a dream, or maybe some sort of late Hypnagogic Imagery?