brilliant! -- use tonic water (& use a black light) to make it more mysterious, because it will glow in the dark AND be ingestable ! Oh and you could add some edible cake decorating glitter too ;)
Akiane's Prince of Peace Portrait of Jesus ( by 8 yr old that claims to have seen jesus ) and also confirmed likeness by Colton Burpo ( child that saw Jesus in death experience and the topic of the book HEAVEN is for REAL by his father Todd Burpo. Both children saw this image of Jesus- and this child painted it at age 8 !