Pretty interesting. I can do the same while stone cold sober. After half a minute or so I see geometrical patterns, much resembling Islamic geometric mosaics, with neon colors, that tend to move around (if I am listening to music, they follow the music). The longer I go, the more elaborate they get, and sometimes they even gain 3D dimensions or lead to scenes resembling dreams. When I tell that to most people they act as if I'm a weirdo, except for a friend of mine who sees similar patterns.

Would you say that is similar to what you saw on 2C-B?