The difference between blue ray and green ray.

[zedro]

Another analogy which may help is simply that of a filter. Each color goes thru a yellow filter before we interact with it. When in 4th Density, the filter is Green, etc.

That's a great way of looking at it which reinforces why it's important to 'refine' the lower chakras so the higher ones are less distorted. To extend the analogy, the first lens/filter is red, then orange, etc...so if red ray lens is highly distorted, the murkyness clouds each subsequent lens, and at worst, completly obscures them. In forth density, those first 3 lenses (eventually) get discarded all together, because they essentially become transparent, removing all distortions.

I'm thinking someone is going to find a Ra or Quo quote that says exactly that lol.