What is the meaning of mellowness?

noun

• Kindheartedness through maturity or old age.
• A taste (especially of fruit) that is ripe and of full flavor.
• The property of a sensation that is rich and pleasing.
  • usage: "the music had a fullness that echoed through the hall"; "the cheap wine had no body, no mellowness"; "he was well aware of the richness of his own appearance"
  • synonyms: fullness, richness
• A soft shade of a color.
  • usage: "a mellowness of light and shade not attainable in marble"
• Geniality, as through the effects of alcohol or marijuana. .