IRVINE, Calif. — St. John has lots of irons in the fire, and all that activity is having a positive influence on the company’s look this season: bold jewel tones, long knit gowns dusted with sequins and crystals, and sporty little jackets paired with slim pants. On the runway at the Bren Events Center, the company showed its versatility with fall looks from its four lines: St. John Sport; G&G, designed by Kelly Gray; St. John Knits by Marie Gray, and the St. John Coat Collection. Standouts included the camel leather pants and pintucked jacket, the floral sequined cheongsam and the black shawl with a gold border.