Extra Light Olive Oil and Extra Virgin Olive Oil are the same oils except that one is lighter in color than the other and they taste a bit different.
Also the only real difference between extra light and extra virgin olive oils is that Extra Light Olive Oil goes through a process so that it becomes lighter and has a lighter color than extra virgin olive oil.
So just one is lighter than the other and has different tastes but they're made from the same olives.
So there's not much difference between the two although there are a few differences.