In a large mixing bowl, add the softened cream cheese, sugar, milk and vanilla. With an electric mixer, beat until smooth and creamy.
Mix in the lime juice and green food coloring (optional) and stir well to incorporate.
Fold in 1 Tablespoon of lime zest (cover and store the remaining lime zest for use right before serving).
Cover the dip and refrigerate until ready to serve.
Before serving, sprinkle with remaining lime zest, graham cracker crumbs and/or a lime slice.
Serve with fresh strawberries, pretzels or cookies. ENJOY!!