THOSE REGAL RED-TILED ROOFS… lend Santa Barbara much of their visual flair, but if you had to land on another hue that adds oomph to the American Riviera, you just might alight upon “blue,” the color of the sky. If you were feeling especially poetic, you might even break out an “azure,” for Santa Barbara, brilliant blue skies, and sunshine are a rather glorious grouping. But it may surprise you to learn that snow, like a lot of snow, is occasionally a feature in the blue-hued, beam-filled spot, at least when a certain celebration leaps into Santa Barbara Zoo. It’s the annual (and adorable) Snow Leopard Festival, a party that is also known for something rather rare, at least for the area: The opportunity to go…..