Canon EOS-1D X Manual (en)

You can specify settings relating to color management, such as settings 
for work color space, conditions for color matching, etc.
Default settings of Work color space
You can select the color space 
 to be applied as a default setting 
of RAW images from five types. The color space set will be applied as 
the color space when a RAW image is converted and saved 
 or printed 
If you change the color space, and you restart DPP, the set color 
space is applied as the default color space.
You can check the color space that is set in an image in all windows 
except the quick check window.
If you checkmark [Use shooting color space as work color space], 
the color space specified with the camera when the image was shot 
will be set as work color space.
Color Management
Color matching settings (color setting of the monitor)
Where a profile 
 is attached to the monitor you are using, you can 
display an image in more faithful colors by setting the profile.
If you select [Use the OS settings], the color profile set in OS will 
also be applied in DPP. If you are using multiple monitors, the 
profile set for each monitor is applied to DPP.
Select the [Monitor profile], click the [Browse] button. You can 
select a profile for your monitor in the dialog box that appears.
If you use a profile created using a third-party monitor color reader, 
images can be displayed in even more precise colors.
Printing profile (color setting of the printer)
Where a profile is not attached to the printer you are using to print 
images, you can print an image, simulating the colors displayed on 
screen by setting the profile in DPP. 
Precise coloring with a third-party monitor color reader
When you set a profile for printing in DPP, set the color adjustment 
function of the printer driver to off. If it is left on, the image may not 
be printed in colors close to those displayed on screen.
Even if the default setting is changed, the new default setting is not 
applied to edited (i.e., adjusted using the tool palette, cropped, dust-
erased) images. Change the settings individually.
Changes are not applied to the edited image
You can set a color space that is different from the default settings
for each image