What if?

I was just wondering what if different people see in different colors. For example, what if one person saw green as what someone else saw as blue? This would change everything. If one was to live in the other personʼs world, then what would they think? One would have to look on the labels on colors to figure things out. Of course i am sure many people have thought about this too. This mightʼve come from the idea of different color eyes. Someone with green eyes might see things differently than a person with blue or black eyes. Just something to ponder about while riding in a car getting oneʼs head bored off.