Oh…well, I didn’t know green was a thing. Thanks for the info, I guess the serious description of each is Home Assistant blue was a limited edition with entry level hardware, essentially the same thing as home assistant green. Home assistant yellow is more of an enthusiast hardware that had zigbee built in and a raspberry pi is just a raspberry pi and runs home assistant just fine.
I personally run my instance on home assistant blue but have helped a few friends setup home assistant on a raspberry pi. So any of the options will work just fine.