For half a century, the artist Ellsworth Kelly (b. 1923) has been acclaimed for his clean, clear forms of specific and brilliant color. His precise and confident approach is best known in paintings, but can be seen as well in his drawings, sculptures and, it turns out, in his prints. Despite its title, the exhibition “Ellsworth Kelly: Prints and Paintings,” on view at the Los Angeles County Museum of Art through Apr. 22, 2012, features only a handful of paintings and one sculpture-- but it is the artist’s first print retrospective since 1987.