Tropical pineapple banana coconut cupcakes

Ingredients

• 220 g white sugar
• 180 butter
• 4 eggs
• 300 g self raising flour
• 4 tablespoons milk
• 2 teaspoon vanilla extract
• 2 teaspoons coconut extract
• 175 g butter
• 225 g icing sugar
• 1 teaspoon vanilla extract
• 1 teaspoon pineapple extract
• 1 teaspoon banana extract
• blue food colouring
• 1 tablespoon milk