Well I think it's obvious. Yellow is the color of sunshine, but green is the color of nature. Sunshine gives you sunburn, but nature gives you nudity and sex. I'd go for the green. It's obvious.
Yellow has the hard cock though
Soft cock is good, too...promising a sunnier, brighter future!
I'll go with the yellow because of the hard cock. Maybe Enzo's favorite color is yellow??
Might be will post more of him later