You will be making this drink in layers.
Blue sugar rim: Use a Ziploc bag and add 3 tbsp of sugar. Take blue food coloring and add 2 drops into the ziplock bag filled with sugar. Shake the bag to distribute color and rub the bag in between your hands to spread the color on all of the sugar.
On one of your appetizer plates add simple syrup and on the other one pour out the blue sugar
Take your glassware and dip the rims in the simple syrup and then in the sanding sugar set to the side
Fill your glassware 3/4 of the way full with ice