I don't know if there's a connection between green and personality, but you may be interested to know its the historical color of Gaelic and Ireland culture.
It is also a long history tradition  as the Ireland and Gaelic culture.
This is interesting as my favorite color really is green! I see, examining the visible spectrum, green would be found between yellow and blue. Yes, it is. I like all shades of green, but lean towards a green apple green. Neat, did you also know its evoked from dominant wavelengths of light that are approximately 495570 nm? Well, that is a lot of technical info I'm unsure about so I guess no? LOL. Also is light being emitted by the animals that are green? I don't know about the light details for animals but they many are green because they adapted to their green environments. Their green hues then become a camouflage for them. Yes, I know of this, but wonder, still, if color preference has any indication of a person's personality.
It also has a long historical tradition as the color of Ireland and of Gaelic culture.