On the cushion, gazing is more stable with little need to blink, colors and forms slowly developing brighter. During the day, the unification of the senses continues to develop to something more translucent.
Closing my eyes when going to sleep, colors similar to sitting practice often start to emerge and move around. The insides of the eyelids become a living canvas and it is hard to believe that the eyes are not fully open. This effect seems somehow connected with those moments when in formal four lamps meditation the mental process of seeing is cut off and despite having the eye open, I see only blackness. Very hard to believe that the eyes are open. It seems to me that high activity of the visual field with the eyelids closed can prevent the normal cutting of of visual processes when going asleep and on the other hand, the visual processes can be cut off with the eyes wide open if the brain happens to interpret the visual stimulation as unimportant.
Recently I accidentally came across Ganzfeld effect or perceptual deprivation, phenomenon that is caused by uniform stimulation field. Brain starts to amplify neural noise, that is interpreted by visual cortex, giving rise to hallucinations. It is easy to find instructions in Youtube, so I made DIY goggles from ping-pong ball halves, watching diffuse red light while white noise was playing in my earphones. The experiment produced some visual imagery in the form of moving colors and shapes, buth they were less interesting than my normal gazing practice and no hallucinations occured.
Dreams have once again become brighter, lively and easy to recall. Sometimes after waking up I remember meditating in dreams or seeing colors and shapes. The connection between the gazing practice and dreams has become more evident. Lately the colored canvas is sometimes activated when falling asleep, producing accelerating swirling forms or a kind of slowdown version of Star Wars hyperdrive effect that eventually transforms itself into recognizable objects and dream characters as the hypnagogic state develops further.