Line the base of a 8 x 4 inch loaf pan or similar size dish or silicon pan.In a saucepan over low heat place the coconut oil, coconut milk, rice malt syrup and vanilla. Stir until melted and combined.Remove from heat and add desiccated coconut. Mix well until combined.Press half the mixture into the prepared tin and spread out evenly with a spatula or back of a spoon.To the second half of the mixture left in the food processor add the blue spirulina powder and process again until well combined.Press the blue mixture on top of the white. Place into the freezer until firm (about 30 minutes). Cut into 12-14 small slices to serve.