Why are there lights of different colors on the wings of an airplane?

Why are there lights of different colors on the wings of an airplane?

In detail:

-Red color on the left wing

Green color on the right wing

- A white color on the tail end. In all aircraft, a red light is placed on the tip of the left wing, and a green light is on the tip of the right wing, in addition to the presence of a white light on the rear wing of any aircraft, which is one of the important matters in aviation science. The red light and the green light on the wings can be any The pilot of another aircraft must distinguish whether this aircraft is coming towards him or in the opposite direction.

I will explain this as follows: If the pilot of another plane sees only red and white lights, for example, this means that the plane is coming on the same course as him from the left.

But if he sees green and white...it is coming from the right. According to aviation law, he must give up his course directly to the incoming plane without any delay to avoid any accidents.