cpp-face-dark-name-list

cpp-face-dark-name-list is a variable defined in `cpp.el'.
Its value is

("dim gray" "blue" "cyan" "yellow" "red" "dark green" "brown" "dark orange" "dark khaki" "dark violet" "purple" "dark turquoise")

Documentation:
Background colors useful with light foreground colors.

You can customize this variable.