Strange lines using random colour

Unity Engine
1

I have a number of cubes and the top rows block ID is 1. I want to modify each cubes colour by a random amount to make the floor look more interesting however using my script I get these wierd lines of certain colour everytime.

using UnityEngine;
using System.Collections;

public class Block : MonoBehaviour
{
	public int BlockID;
	public int BlockHealth;
	System.Random r = new System.Random();
	void Start()
	{
		if(BlockID == 1)
		{
			int g = r.Next(0,10);			
			this.renderer.material.color = new Color(Color.green.r, Color.green.g + g, Color.green.b,1); 
			
			

		}
	}

}
2

Woops. Didn’t know that unitys RGB is actualy a float between 0 and 1. Fixed by dividing by ten