The terms "red book", "yellow book", and "orange book" refer to:

ANS:D - CD-ROM standards

The "books" of the Compact Disc family were named after the colour of the binder covers in which the specification was issued. Red Book is the specification for CD Audio, Yellow Book is CD-ROM, Orange Book is CD-Recordable, Green Book is CD interactive (CD-i), Blue Book is Enhanced CD and White Book is Video CD.