That's a grab of my 800x600x8 Workbench screen, showing my current
boot picture (halvesized).
It's the cover art from Don Lawrence's first Storm (Commander Grek).

The icons are my own creation and use 6 colors only. Isn't it enough?

 PERMSSN    UID  GID    PACKED    SIZE  RATIO     CRC       STAMP          NAME
---------- ----------- ------- ------- ------ ---------- ------------ -------------
[generic]               198549  257130  77.2% -lh5- 03f4 Sep  5  1995 Workbench_800x600x8.iff
[generic]                  555    1028  54.0% -lh5- e5cb Sep  6  1995 Workbench_800x600x8.iff.info
[generic]                  276     404  68.3% -lh5- 5fd2 Sep  6  1995 WorkbenchGrab.readme
---------- ----------- ------- ------- ------ ---------- ------------ -------------
 Total         3 files  199380  258562  77.1%            Sep  7  1995