Policies are external files containing color management preferences. When you use a policy to configure color management, the settings in the file get applied automatically every time you launch Maya, start a new scene, or open a saved scene. This allows for a common color management policy to be enforced across a team, either per project or per shot.
If you modify the color management preferences and click Save while a policy is specified, you are prompted to update the current policy or export a new one. Click the × button to cancel and return to the Preferences window.
If the specified file cannot be found, the path is displayed in italics.
To stop using a policy, clear this field.
You can set the MAYA_COLOR_MANAGEMENT_POLICY_FILE environment variable to the full path and file name of a policy to load it automatically when you launch Maya. When you do this, you can still modify color management preferences and update or export the settings. You can also load a different policy, or even clear the path to unload the policy. The new settings are used for the current session, but the policy specified by the environment variable will be applied again when you relaunch Maya.
If you also set the MAYA_COLOR_MANAGEMENT_POLICY_LOCK environment variable to 1, then you cannot modify the color management preferences, except to toggle the display of color-managed pots or to disable color management in the current scene. The original settings in the policy are reapplied when you start a new scene or open a saved scene.
For more information about environment variables in general, see Environment Variables.