In a high-speed blender, combine the coconut milk, rice milk, crushed ice, pineapple chunks, watermelon chunks, and dragon fruit drops. Blend until all is completely smooth.
Add 6 drops of royal blue AmeriColor soft gel paste to the mixture. Blend until the mixture becomes a deep shade of blue. Add more or fewer drops of blue, depending on your preference.
Homemade blue milk will be sensitive to heat and will melt quickly. Serve immediately in a frosted glassed or just keep it frozen. Enjoy!
You can find prepackaged frozen pineapple chunks at your local grocer in the freezer aisle.
Pre-cut watermelon chunks can also be found at your local grocer in the produce section in single cups.
Dragon fruit concentrated flavor drops can be purchased online.