Yeah, Ra never really talks about it much however they do refer to the red-ray as the "elemental body without form", however they then refer to the "ectoplasm" of the green-ray body, not sure what that would correspond with, and then they refer to the "etheric" vehicle many times, yet never define ether or etheric in any way.
I think my thoughts are still the other way, that the elements emerge out of Spirit, but I don't think you can combine the elements to make Spirit. Again, sound is probably the best analogy for me. I would see Spirit as silence, with the elements being all the tones and sounds that emerge from the silence.
Of course, "elements" as a word just refers to "parts", so how they are used is always going to be the subjective issue.
I think my thoughts are still the other way, that the elements emerge out of Spirit, but I don't think you can combine the elements to make Spirit. Again, sound is probably the best analogy for me. I would see Spirit as silence, with the elements being all the tones and sounds that emerge from the silence.
Of course, "elements" as a word just refers to "parts", so how they are used is always going to be the subjective issue.