Canon EOS-1D X Manual (en)

Setting Work Color Space
A different work color space 
 from the default settings 
be set for each image.
If you set an image with a color space different to the default setting and 
then subsequently change the default color space setting 
, this 
default setting will not be applied and the individually set color space will 
Since only the image processing conditions information changes, the 
color space of a RAW image can be changed at any time.
Display the Settings tool palette  select the color 
space to be set.
Settings tool palette
A color space set individually does not change even when the 
default setting is changed
The color space of a RAW image can be changed freely as 
many times as required