[Matrixctrl] - Looking for better ways to automate turning on/off cell state

I have a matrixctrl that controls the on/off states of a 4 x 8 grid of lights. I'm looking for a way to store and recall sequences of turning on/off the lights.

Currently the way I'm doing it:

I have a [coll] for each sequence. Each index of the coll is the list of which matrix cell should turn on and off. I then step through this sequence using bangs from a metro object. This is a bit of a hassle manually filling colls (i suppose there's other ways of filling it, perhaps clicking on and using an matrixctrl object to create a list of each step's changing cell state in the sequence, and then assigning that list an index in the coll object). Also switching coll's/sequences isn't too clean, and requires a clear message between sequence changes. It'd be nice to be interpolate between the two sequences.

For example with this particular coll

my coll is filled with:

0, 0 0 1 3 0 1 0 7 1 3 7 1;
1, 0 1 1 3 1 1 0 6 1 3 6 1;
2, 1 2 1 2 2 1 1 5 1 2 5 1;
3, 1 3 1 2 3 1 1 4 1 2 4 1;

each time the coll goes back to index 0, that select object clears the matrix before receiving index/step 0's cell state values. Is there a way i can incorporate that clear into the coll without adding an extra step/index? Fuse it into index 0 somehow...

Would love to hear different and creative ideas for this type of control. Meanwhile i'll keep plugging away making a library of colls.

I could use that [live.grid] object, but then, i'm pretty sure, I would need to have 32 rows, one for each light. I like using [matrixctrl] because it gives me a visual representation of the light grid and what it's doing.