We are all of them at the same time but when we talk we mostly use only one so
There are the reds, they are very direct and fast decisive. They hate waisting time and much details, they just talk like it's a mission report.
There are the yellows, they are very creative and chaotic. They like fun and don't actually always follow a plan while speaking. They're the reason the extrovert cliché exists.
There are the greens, they are peaceful and try to avoid any conflicts. No matter how but they want to keep the harmony between people and hate taking risks.
And then there are the blues, they are always planning ahead and love all the detail possible. They don't take a lot of risks either because they always think.
If you learn to talk every color you learn to connect with more people and if you do you can be friends or scam them I don't care what you do with them.
Have a great day!
Alastor