These are actual paint chips reproduced from the specified RLM, FS, and other countries documented color mixtures. And yes, they can be used for digital matching and for documentation purposes for contests. This is "the" base color book and has been the standard used by many in competition.
Cool, thanks Mike! This looks like a great reference to have. Please put me down for one.
On the Bench: TF 1/8 P-47D "Bonnie"
Starting Soon: Chad Veich 1/8 Hellcat
Completed: Tom Herr (Alien Aircraft) Taylorcraft 42