Not quite stock. These themes take elements from existing themes provided by Simon Schneegans, improves upon them and fits in with existing selections.
Explanations of each on my GitHub repository.
The images comes from Discord because I couldn't be arsed to retake.
Numix Clock
A mix of Analog Clock function and Numix theme icons with remade face and hands. The seconds indicator really cleans up the overall look.
Numix Space Clock
Orbiting triangles inside of clock face. Optional: perform a ritual of choice when the triangles line up.
Acquisiton
Both can be found in the archive from my repository. Instructions included!