how to call for rgb vertex color in unity?

Questions & Answers
1

I have an imported model form blender which has vertex color data assigned to it. However, i don´t want to see that color rendered, just use that information and assign specific code based on the RGB values.

2

Is it for the game logic? or shader?

for game logic,

 Color[] color = GetComponent<MeshFilter>().sharedMesh.colors;

for shader, check Unity - Manual: Providing vertex data to vertex programs