Berry Bloom Lemonade
Butterfly pea flowers (steeped and strained like tea leaves) turn this lemonade a pretty violet color. You can use floral ice cubes to take it over the top. This Allrecipes Magazine recipe is based on Hot Pink Lemonade by Candice S.
You can put everything together in one pitcher, too, but building this in the glass lets guests see the color go from blue and pale yellow to a vibrant purple-pink.