In a small bowl, whisk together the chia drink with the green food coloring until well-combined. Divide between two tall serving glasses. Set aside.
In a blender, combine the ice cream, orange juice concentrate, milk and ice. Blend until smooth. If too thick, add splash or two of milk until it's pouring consistency. Add the purple food coloring and blend until evenly colored.
Carefully pour the mixture into the glasses on top of the green chia mixture. Top each with a squirt of whipped cream and a dusting of green sprinkles. Serve immediately!