Digital BW, The Print

Does anyone know whether the EZ refillable cartridges for warm tone  
and neutral tone are different?  Obviously you would fill them with  
different inks, and physically they would be identical. But are the  
chips different, so that a chip would indicate not only the position  
(eg Cyan) but also whether it was warm or neutral?

And for that matter, what is the difference between the EZ chips and  
the regular colour chips? Aside from perhaps identifying themselves  
differently, do the chips somehow determine how the ink is set down  
so that an EZ Cyan-position chip would do different things with its  
ink than a regular Cyan chip?

As you can tell, I don't have a very good idea of exactly what the  
chips do other than making sure you have them in the right places and  
telling you when you are running out of ink.

Thanks.
Myron