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Mesh.colors

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public var colors: Color[];
public Color[] colors;

Description

Vertex colors of the mesh.

If no vertex colors are available an empty array will be returned.

	// Sets the vertex color to be red at the y=0 and green at y=1.
	// (Note that most builtin shaders don't display vertex colors, you can
	// use eg. a particle shader to see vertex colors)

function Start () { var mesh : Mesh = GetComponent.<MeshFilter>().mesh; var vertices : Vector3[] = mesh.vertices; var colors : Color[] = new Color[vertices.Length];

for (var i = 0; i < vertices.Length;i++) colors[i] = Color.Lerp(Color.red, Color.green, vertices[i].y);

mesh.colors = colors; }
using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour { void Start() { Mesh mesh = GetComponent<MeshFilter>().mesh; Vector3[] vertices = mesh.vertices; Color[] colors = new Color[vertices.Length]; int i = 0; while (i < vertices.Length) { colors[i] = Color.Lerp(Color.red, Color.green, vertices[i].y); i++; } mesh.colors = colors; } }

For performance reasons, consider using colors32 instead. This will avoid byte-to-float conversions in colors, as well as use less temporary memory.