Change Attribute of Many Objects at Once

I have 30 LEDs, and I want to change the OnColor of all of them at once.

I'm trying to think of efficient ways to do this. The most obvious solution is to attach a "receive oncolor" object to each one of them. And then send "oncolor $1 $2 $3 $4" to "send oncolor"

I thought the pattr system would offer a good solution here, but I'm not seeing any clear advantage. Pattr and Pattrforward have to be bound to a single scripting name. (I'll go with pattrforward for now, since I may also want to change the off color. And it looks Pattr has to be to a single attribute to single, whereas pattrfoward can send messages to all the attributes.)

So either I need one pattrforward for each object, and then I still have to send the "oncolor" message to each of them. And if I create a new led, I have to assign it a scripting name, create a new pattrforward and bind it, and hook it up to the oncolor message.

Alternatively I could use one pattrfoward object, and rebind it as I iterate through the list of LED scripting names using UZI and a umenu or something (bang, change target, bang, change target, etc). But then I have to maintain a list of LED Scripting names. Count them and adjust uzi.

It's all very messy.

I noticed autopattr makes it really easy to assign formalized scripting names. LED[1], LED[2], LED[3]. I feel like I should be able to leverage this to send a message to all objects of the name LED[$i], without having to keep track of just how many of them there are.

Then I could create a new LED and it would automatically be hooked into my color-changing scheme without a bunch of additional fussing.

Is this possible?
Thanks!