In a medium bowl, beat cream cheese, powdered sugar and marshmallow fluff until smooth. Gradually add 2/3 cup heavy cream and beat until fluffy. Fold in mini marshmallows.
In a medium bowl, beat together remaining heavy cream and pudding mix until lightly fluffy.
Add both dips to a single bowl, alternating spoonfuls of both dips. Use a butter knife to drag through the dip and swirl the colors together. Top with more mini marshmallows and crushed graham crackers.