Grape-Lemonade Ghost Ice Pops

In a medium bowl, whisk together juices, sugar, and 1/2 cup water until sugar dissolves. Slightly flatten each raisin half and press one against flat side of each melon ball. Using a skewer, wedge 2 melon balls, raisins facing out, in bottom third of each of six 3-ounce ice-pop molds. Pour juice mixture into each mold, insert ice-pop sticks, and freeze until solid, about 3 hours (or up to 1 week).