Neither have I, but I found something close to it.
1. fill canvas with black
2. draw random shapes
3. apply dents
4. w/hexagonal grid thingy set to brush size four, on an new layer, make a yellow grid and gaussian blur
5. add new layer, apply grid hexagonal thing with brush size four and green color, and gaussian blur
6. set blending mode to overlay (I think)
7. merge layers
8. add new layer
9. with brush size one, make a black hexagonal grid