Get Pixels from rectangle center of a texture

 function TakeScreenShot (name : String) {
           yield WaitForEndOfFrame(); // this also captures gui, remove if you don't wanna capture gui
           var shot = new Texture2D(Screen.width,Screen.height,TextureFormat.RGB24,false);
           shot.ReadPixels(Rect(0,0,Screen.width,Screen.height), 0, 0, false); 
           
            if(shot.width > 1024 || shot.height > 512)
            TextureScale.Bilinear(shot,2, (4.0/parseFloat(Screen.width))*Screen.height);
       
           shot.Apply();
           
           var TextureColor = shot.GetPixel  ( 1,1 );
            Application.CaptureScreenshot("/Assets/Screenshot.png",1);
           print(TextureColor);    

Hi i need to get the color of the middle of a texture var TextureColor = shot.GetPixel ( 1,1 ); But i get allways wrong color-value.