Keep banded row style when changing field formatting background in matrix

When using the "Field formatting" section for a matrix, changing the background color of a field changes it for every row - even when the rest of the matrix is "banded style" or "alternating colors". This can be desirable in many cases.

But what I would LOVE is if you could change a field's background and alternating background, to keep the banded style while still distinguishing that column from the others.

I've also had someone suggest that adding a transparency setting to the color setting, that would then overlay the existing background, would do the trick!