DataTable HTMLTemplateFormatter cell size

Currently, one can set the background color and other CSS style elements of DataTable cells using the HTMLTemplateFormatter. However, this assigns a child <div class> to the parent <div class slick-cell> which has padding set to 4 px and border set to 0.25 px. Thus, there’s always going to be a bit of white background behind the color, as seen in the answer to

It would be nice to be able to color an entire row without that white margin showing up. With the parent having that padding, I don’t think this is possible. One could set the width of the child to something like 110% in the HTMLTemplateFormatter, but this would only push the background color in one direction.

I think it would be better for the parent’s padding and border to be set to 0 px, and then the child (which the user gets control over with HTMLTemplateFormatter) gets to be anywhere the user wants it. So I’d like to change lines 49, 50, and 52 to 0 px.

Is this the kind of thing I need to make a custom model for, or should I put in a pull request?