Hi - I've noticed a phenomenon that sometimes happens when I very first open my eyes in the morning. It only lasts for a few seconds, then fades.

It first happened a year or so ago after I did a yoga nidra meditation before bed the night before, and it has happened several dozen times now. From what I can remember, this coincides with either yoga nidra or HemiSync the night before.

It is as if the morning light coming in from the windows is a brilliant color - there is only one per morning. There has been a brilliant yellow, or bright green, but the vast majority of times a deep cherry red or a neon pinkish purple. Then it fades, and the light is clear white.

This morning it happened again - I did a couple of HemiSync exercises last night after several weeks of having done none. Sure enough, waking up this morning was like getting a view of the morning through a jar of raspberry jam.

Can you tell me, physically or metaphysically, what this is?