B5 BLUE

Can anyone show me the difference between GB5 & EB5 blue

This is an exercise in futility. How the color looks in a picture will depend on the lighting, camera settings, angle of the camera etc. And how it looks on your computer screen has more to do with the capabilities and settings of your screen than the actual color of the paint.

It’s already been mentioned many times, ANY paint with metallics in it is extremely difficult to match. Even paint from the same damn can will appear lighter/darker depending on the settings of the spray gun, the temperature and humidity at the time of the spray out, the cure time on the paint etc. Because all of that can effect how the metallic lays out in the paint, and how the metallic lays out has a massive influence on what the color actually looks like.