Sorry Bill, I often have difficulty expressing my thoughts into words. The meaning of the (seed) in each symbol, represent the balance of all things, good & evil, light & darkness, the existence of one within the other,etc.
I wish I had the flash capability to try to show what I mean. I'll have to attempt to explain:

I was thinking he could do a different flash where each symbol begins as a seed, grows into the symbol, then the seed of the opposite symbol appears, and grows into that symbol as the old symbol fades..... and just repeat the cycles????
(hopefully that makes sense..... cuz that was a real struggle for me) Now I have a headache