Chicano art, black art, light-and-space art and feminist art are just some of the features of a massive look back at art in Los Angeles from 1945 to 1980. It was a freewheeling time of grassroots experimentation with influences still felt in the art world today. Opening this weekend, Pacific Standard Time is comprised of 60 official exhibitions at LA's major museums and galleries, along with performance art, public art and dance. The Getty is backing it with $10 million. Tyler Green is an art critic and editor of "Modern Art Notes," a visual art blog.