Where is the simple particle shader?

So I got a simplistic texture in .png format. A filled circle.

Now I want to display an effect using this filled circle and nothing else. No additive effect, no blending effects, no transparency. Unfortunately every shader I try has some kind of blending or transparency. Am I missing something here? I just need the simplest of simple and can’t find it…

I expected something like a “cutout” shader on the mobile shaders, but there isn’t anything. Where is it? Please help, this has bugged me for quite a while now.

Reading the note on this topic http://forum.unity3d.com/threads/196478-Cannot-create-opaque-particles which describes “every shader having some degree of transparency” it seems a similar issue on my setup…

On my part the issue happened when the particles were over a semitransparent placeholder object. When giving this object a diffuse color this “degree of transparency” on the particles vanishes in fact with the “Alpha blended” shader.

Despite it’s weird, because what happens if I actually use semitransparent objects???