Style removal button for multi-value field widget items

📌 Allow for deletion of a single value of a multiple value field Fixed has been committed.

Just wondering if there is a plan for how to target the element to style it? I am needing to style the new button, and I'm not seeing anything very targetable; I also tried a theme preprocess but it's pretty messy because of the template preprocessing that's done on the form that puts it into a table and the buttons are in individual rows in cells that do not have an identifier either. Is a separate issue needed to add some targetable CSS to the markup (I searched but wasn't able to find one)?

Here's After merge screenshot: