Chameleons as pets

Someyears ago a friend of mine has received a little chameleon as gift. The animal was originar from Morocco. That time was summer and there were planty of insects even in the house. It sits all day long in the apartment flowers and hunt for flies and mosquitos. It was green and sometimes it turns into a light brown. I was intrigued how it managed to catch all these insects because it was very very slow. His weapon is his tongue which is as long as his body. And very very fast.
Another funny thing was its eyes. They moved independently. Its vision is not binoculars like other animals and humans.
These days none of us knows nothing about chameleons life in captivity. When summer turns into autumn and winter, all insects dissapeared and there was the food problem. What else can cameleons could eat ? The answer was provided by the chameleon itself ! One day we saw the chameleon up on an empty fruits jem jar, throwing its tongue inside and licking the walls. We were so happy that the food for the winter was solved. For the menu variation we feed him small pieces of salami.
We couldn't see the evolution because next spring my friend left an open window and the chameleon has run outside and nobody could find it.
Next spring I want to buy a new one or two to put them into my greenhouse.