This is a set of bonus theme sprites with a robot styling which were originally released to coincide with the Raspberry Pi 400 all-in-one computer.
Merge the contents with your existing disc. Note that for this to work there is an assumption that you already have the ‘Raspberry’ theme selected and that window/menu/iconbar textures are enabled, as only the changed files are provided in this archive.
Best viewed in a true colour mode; 16 million colours are optimal.