Actress Julia Roberts, as Elizabeth Gilbert, wears Ray-Ban 3025 Aviator sunglasses in the film Eat, Pray, Love. 

The exact color of the Ray-Ban sunglasses that she is wearing is Black frame and probably custom lenses (maybe polarized), color-code 002.

The Ray-Ban RB3025 Aviator is available in several sizes and color combinations. 

Shop at Ray-Ban ($230 $180 polarized)
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Shop at Amazon ($230 $180 polarized)
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Shop at Amazon ($180 non-polarized)
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Reference: Ray-Ban RB 3025 - Color: Black frame, Gray Green lenses (code 002)