Pulsing glow/self-illum

Hello everyone, Im trying to get a effect which consist of getting a pulsing glow on a object which has to get picked up in the game so the player can see it easyer.

I tried to animate the main color of the self illum shader but I could figure it out.

Click here

Something similar but it doesnt need to be on the edge

     // Interpolate light color between two colors back and forth
     var duration : float = 1.0;
     var color0 : Color = Color.red;
     var color1 : Color = Color.blue;
     
     function Update () {
         // set light color
         var t : float = Mathf.PingPong (Time.time, duration) / duration;
         light.color = Color.Lerp (color0, color1, t);
     }

I found this for a lamp tried to adap it but i failed...

I hope you guys can help me out

Greetings

Saudius