A File found in the Ship's Bar in Resident Evil: Gaiden (Remake),it also carries a picture about Color Formulas.
File[]
D
(I'll write when i can...)
There's a picture here.
(a Picture of a Billard Table.)
"It is a Picture of a Pool Table with the following formula written on the back..."
Red + Blue = Purple
Blue + Yellow = Green
Red + Yellow + Orange
(End of File.)