Combine the grape Jell-O powder and gelatin in a medium saucepan or a large heat-safe measuring cup. Pour in 1 cup of boiling water and stir until the gelatin has dissolved. Once dissolved, mix in 1/2 cup of cold water, then 1/2 cup of Vodka.
Place the ghost mold on a flat plate for easier handling. Pour the Jello into the mold. Refrigerate the Jello shot ghosts for at least 1 hour.
Once set and firm, spray the bottoms of the ghosts with cooking spray to help with removal and prevent sticking. Place the bottom of the mold into the bowl of warm water for. 15-20 seconds, then gently turn the mold inside out to release the ghosts.
In a small bowl, mix a tiny amount of vodka with edible gold to create a paint-like consistency. Use a small paintbrush to apply the gold dust to the ghosts' faces. For extra shine, optionally spray with edible gold spray for extra shine.
Let dry for 1-2 minutes, then store the ghosts in an airtight container in the refrigerator until ready to serve.
Repeat these steps for the other two Jello flavors.