Make it a double, toil and trouble….
1-2 pinches color ColorKitchen color packets (shown here: turquoise=1 pinch blue + 1 pinch green, and purple=1 pinch pink + 1 pinch blue)
Mix with ½ tsp flavored syrup until color dissolved.
Add ¼ cup soda water (watch out, it’s extra fizzy with color!) and ¾ tsp lime juice. Mix with spoon.
Add vodka to taste or enjoy as a mocktail with ice cubes.