if (System.IO.File.Exists(filePath)) {

var www : WWW = new WWW (WayPath+"logo.txt");

Shader "Custom/LightShade" {
Properties {
     _Color ("Main Color", Color) = (1,1,1,1)
     _MainTex ("Base (RGB) Trans (A)", 2D) = "white" {}
}

SubShader {
     Tags {"Queue"="Transparent" "IgnoreProjector"="True" "RenderType"="Transparent"}
     LOD 200

CGPROGRAM
#pragma surface surf Lambert alpha:blend

sampler2D _MainTex;
fixed4 _Color;

struct Input {
     float2 uv_MainTex;
};

void surf (Input IN, inout SurfaceOutput o) {
     fixed4 c = tex2D(_MainTex, IN.uv_MainTex) * _Color;
     o.Albedo = c.rgb;
     o.Alpha = c.rgb;
}
ENDCG
}

Fallback "Legacy Shaders/Transparent/VertexLit"
}

o.Alpha = c.a;

o.Alpha = c.rgb;

o.Alpha = -c.rgb;

o.Alpha = 1 - c.rgb;