Thanks so much, Perche for the Gelato Tutorial. I now have even more confidence in the little gelato parlor which recently opened nearby in our neighborhood Walking distance. The owner is a well-regarded Italian Chef . He owned a successful small restaurant for many years until the landlord raised his rent in to the stratosphere. He is now making his own gelato made with organic milk and all natural flavors. No green pistachio. The only visible colors are the chocolate; light and dark. All other flavors are white or off white. Only the garnishes differentiate the flavors. There might be a swirl of chocolate or a swirl of sour cherries, etc. If you are in Southern California look for Spatola Artisan Gelato. It checks all of the boxes you mentioned. . In the Brentwood area between UCLA and Santa Monica.
Update: So, I had a craving for gelato today, particularly as I now knew that the neighborhood gelateria was the real deal. Drove there and found that it was closed. Sign gone, completely empty. I guess the neighborhood wasn't ready for authentic gelato.