Hi Unclebump,
All of the elements of an array must have the same properties. Only the values can differ.
This is not the case with a cluster.
If you build a cluster that has the same look as you array indicator you could use the "array to cluster" function to do your conversion for you.
Once you have you cluster built, you can then go to the FRONT PANEL and right click on one of the graphs and do a "create property node". Repeat this for all of your graphs. THe individual property nodes will then let you manipulate the properties of the individual graphs without affecting the others.
Another approach would use control refnums to get at the properties of the individual graphs.
I hope this helps,
Ben