Instructions for this image:

1.  Draw gradient.  (Ctrl - J)   Default colors.  VertCenter Gradient.  256 x 256.

2.  Rotate Seamless.  (Ctrl - Alt - S)

3.  SineWave Both, ud 1 peak 128 height, lr 2 peaks 64 height.

4.  SineWave U/D, 1 peak 128 height.

(Perform steps 3 and 4 in succession a total of four times)

5.  Mirror L/R.  (Ctrl - L)

6.  4way Flip.  (Alt > I > S > F)

7.  Smooth Resize to 256 x 256.  (Ctrl - R)

8.  Copy to Buffer.  (Alt > B > C)

9.  Click on a blank area of the window (not on the image, but below or right of it).  Draws a 'rainbow' kind of color blob.

10. Edge Merge 1/8.  (Alt > I > S > M > 8)

11. Perform steps 3 and 4 in succession a total of four times.

12. Rotate Seamless.  (Ctrl - Alt - S)

13. Mirror L/R.  (Ctrl - L)

14. 4way Flip.  (Alt > I > S > F)

15. Smooth Resize to 256 x 256.  (Ctrl - R)

16. Negative.  (Ctrl - N)

17. Color Rotate setting 8.  (Ctrl - O)

18. Map Texture (default brightness).  (Ctrl - F2).  Use Buffer.

19. Color Rotate setting 8.  (Ctrl - O)

Note - this image was lightened so the text would show up better.