Shader + GPU Based Reaction Diffusion vs. Perlin Noise

The majority of the functionality for reaction diffusion, the application of a Perlin noise vector field to reaction diffusion (excluding the vector field's generalized display), and painting, have been moved to GPU shaders for the sake of performance.

The UI is now written only as HTML / CSS

Reaction Diffusion vs. a Perlin Noise Vector Field

How does the Gray Scott reaction diffusion model behave when subjected to external forces?