GoPro HERO 4 Black User Manual page 65

COLOR
Color allows you to adjust the color profile of your video footage
or photos.
Color Setting
GoPro Color
(default)
Flat
Resulting Color Profile
Provides GoPro color-corrected profile (same
great color as when Protune is turned off).
Provides neutral color profile that can be
color-corrected to better match footage
captured with other equipment, offering more
flexibility in post-production. Due to its long
curve, Flat captures more details in shadows
and highlights.
/ Protune
65