ShaderLab Tutorials-Vertex Colors Lerp

Shader "ShaderLab Tutorials/Vertex Colors Lerp"
{
Properties
{
_Color("Color (A = Blend)",Color) = (1,0,0,0)
//_Number("Number",range(0,1)) = 1
}
SubShader
{
BindChannels
{
bind "vertex", vertex
bind "color" , color
}
Pass
{
//Color [_Color]
SetTexture[_]
{
constantColor [_Color]
Combine constant lerp(constant) primary
}
}
}
}