Can we use numpy to simulate a Shader?

Shaders let us do some really cool graphics. As a Python programmer I'm a little jealous. Can we do something similar using only numpy?
You can find the scripts used in this video:
- _pygame_templ.py: github.com/hug...
- distance_field.py: github.com/hug...
This video uses:
- NumPy numpy.org/
- PyGame www.pygame.org/
- Python python.org/