Lupin the 3rd: Green vs RedLupin III: GREEN vs RED

If Lupin is stealing something in one place, how can he be shoplifting in another place entirely? One Lupin wears red; the other wears green. In the final standoff, whose side will Jigen, Goemon and Fujiko choose? After all, as the world's number one thief, there can't be two of him!