If you’ve been to an event, or taken images indoors, for instance, sometimes colour doesn’t quite come out right…
This can account for all the images taken, so to quickly resolve the issue, open one of the images and hit Record in your Actions palette.
Go to Image>Adjustments>Color Balance and correct the cast back to normal. Hit Stop in the Actions palette to store the Action.
Now go to File>Automate>Batch and select the Action just made and apply this to the folder of images with the colour cast.