Where are these images?

[TDD]

In the attached image I've circled in red the images i'm searching for, but cannot find them - for the theme I'm making I require to change these but could not locate them inside other.artwork - has anyone any knowledge as to the locations of these files? I'm referring to the white rounded rectangles seen in a few of the application - mainly settings.app

Many thanks to the person who tells me the filenames/locations of these images.

[TDD]

My other theory is that these might be generated on-the-fly and if so, does anyone have any idea where the specifics for the generating of these sections are?

Thanks again