To make this:
1. New Image (I used 1024x768)
2. Add a new layer
3. Black & Grey Gradient tool set to Reflected & Mode to "Difference"
4. Go over the new layer a kazillion times with the Gradient until you get something nifty looking
5. Filter>>Blur>>Radial>>Settings: Zoom, Best, 50 or higher
6. Ctrl U>>play with the hue, saturation, light etc.
7. I went over it with the blur brush to smooth it out a bit
8. I then played around with the Filter>>Render>>Lighting Effects to see what would happen.
Preview:

Full-size File:[attachment=286:attachment]</r>



