Unless you consider “clear” or “cloudy” as colors, then most vaccines are colorless. One exception is the MMR that has a yellow/golden tint to it once reconstituted. Four great reference books dealing at least in part with vaccines exist and are often or always called by a color. See if you can match the book with the group responsible for its publication.
1. THE YELLOW BOOK A. American Academy of Pediatrics
2. THE PINK BOOK B. Centers for Disease Control
3. THE PURPLE BOOK C. Immunization Action Coalition
4. THE RED BOOK
For answsers and reviews of each reference, please click here.