>>9924657Another (quick) analogy is the 'Bifrost', a rainbow that the gods could use to travel between the Nine Worlds but that would burn the feet of whoever was not a god: I'm thinking this may mean the rainbow, made by the colors of the chakras, allows passage only to those with a soul ready for it, lest one feels incredibly uncomfortable pain.
We have similar things in Slavic religion, but it's another topic.