How do you add a Color Tint to a shader?

Questions & Answers
1

I’m not at all good with code but I managed to put this together, But why doesn’t the colour tint, tint?

Shader "Custom/IlumBlend" {

Properties {
	_Color ("Color Tint", Color) = (1,1,1,1)
	_MainTex ("Texture 1", 2D) = "" 
	_Texture2 ("Texture 2", 2D) = ""
}

SubShader {	
	Material {
		Emission [_Color]
}
	Pass {
		SetTexture[_MainTex]
		SetTexture[_Texture2] { 
			combine texture * primary + previous
		}		
	}
} 

}
2

There’s some documentation on what you need here http://docs.unity3d.com/Documentation/Components/SL-SurfaceShaderExamples.html