CSS has many ways to select an element. I’m sure I could find the right selector for you to accomplish that… If I only knew what you are showing in the image. I have no idea what that is or what it is for. Is that the field builder? or the created field with some repeater?
I don’t think that would be too hard to accomplish hacking the plugin’s code. Finding where the code is rendered and adding a class with the field’s type is one of the easiest things to do. If you give me more info I could give it a shot.
