Damaged COLOR PPF is replaced rather than repaired, and replacement is done panel by panel, so a single damaged panel does not require re-filming the whole vehicle. Light surface scratching in the topcoat self-heals with heat. Cuts, tears and impact damage that reach the adhesive layer need the film on that panel removed and re-applied by an authorised installer.
One limitation to be aware of: replacement film can differ slightly in shade from film that has already spent time on the vehicle, because of production batch variation and weathering. On a highly visible panel, ask your installer whether re-filming the adjacent panels will give a closer match.