A moire type pattern generator but with color cycling.  

 PERMSSN    UID  GID    PACKED    SIZE  RATIO     CRC       STAMP          NAME
---------- ----------- ------- ------- ------ ---------- ------------ -------------
[generic]                 6744   19755  34.1% -lh5- 9491 Jan 11  1987 Polygon/iffwriter/iff.h
[generic]                  460    1073  42.9% -lh5- 321d Jan 11  1987 Polygon/iffwriter/iffwriter.h
[generic]                 1224    3566  34.3% -lh5- 25f7 Jan 11  1987 Polygon/iffwriter/iffwriter2.c
[generic]                  418     749  55.8% -lh5- 5971 Jan 11  1987 Polygon/iffwriter/README
[generic]                   97     134  72.4% -lh5- 90aa Jan 11  1987 Polygon/makelink2
[generic]                 3731   13452  27.7% -lh5- 8f30 Jan 11  1987 Polygon/palette.c
[generic]                  625    4010  15.6% -lh5- 4e88 Jan 11  1987 Polygon/poly.c
[generic]                  769    5992  12.8% -lh5- 6a00 Jan 11  1987 Polygon/polyg3.c
[generic]                16792   48016  35.0% -lh5- f15b Jan 11  1987 Polygon/Polygon2
[generic]                 1610    5804  27.7% -lh5- e59f Jan 11  1987 Polygon/polygon2.c
[generic]                 1819    5229  34.8% -lh5- 8f5c Jan 11  1987 Polygon/polygon2.h
[generic]                 9553   59854  16.0% -lh5- 63dd Jan 11  1987 Polygon/polynums.c
[generic]                  646    1107  58.4% -lh5- c9a1 Jan 11  1987 Polygon/README
[generic]                 1836    4856  37.8% -lh5- ae2a Jan 11  1987 Polygon/save.c
---------- ----------- ------- ------- ------ ---------- ------------ -------------
 Total        14 files   46324  173597  26.7%            Jan 11  1987