I remember when talking to people about spiritual matters a while back, one subtle but important symbol kept appearing. It was of one or more beings who appeared shaped rainbow colours - always appearing in a form that seemed the most harmless, accessible, friendly, non-threatening. I only have a few accounts I remember from friends, and I may have glimpsed one myself, so I thought it might be worth exploring these "rainbow angels" as a symbol, and see whether anyone else may have seen them in some form or other. There often seemed some form of comforting association, and their appearing in form almost most accessible to the person was intriguing. Interestingly enough, I think there's a plausible rational neurological explanation - I remember when studying about sleep and dreaming in psychology, it was noted that colours rarely come up in dreams excepting in really deep sleep, with reds being more common in light sleep, and blues tend to be restricted to deep sleep. Therefore in times of emotional stress, it might be the case that a person may be particularly subject to periods where the neurochemistry of the state will influence perception of colour in various imagery in a similar manner. However, I've often wondered at the potential spiritual connections. I don't recall coming across anything similar in the mystical lit - so has anybody ever glimpsed anything in this form?