Shades: a program to lighten or darken any color of any screen.

It's a commodity, it has a hotkey sequence (definable
through tooltypes), you can set different light/dim values
for different screens and it will remember those settings
(until you switch of your Amiga, that is).

Update from version 1.4

 PERMSSN    UID  GID    PACKED    SIZE  RATIO     CRC       STAMP          NAME
---------- ----------- ------- ------- ------ ---------- ------------ -------------
[generic]                13859   34728  39.9% -lh5- 203d Jun 30  1997 Shades
[generic]                 4648   11857  39.2% -lh5- 97d7 Jun 30  1997 Shades.guide
[generic]                 1525    3134  48.7% -lh5- 5480 Jun 18  1996 Shades.guide.info
[generic]                 1505    3006  50.1% -lh5- 36b7 Jun 18  1996 Shades.info
[generic]                  307     495  62.0% -lh5- 32e3 Jun 30  1997 shades.readme
---------- ----------- ------- ------- ------ ---------- ------------ -------------
 Total         5 files   21844   53220  41.0%            Jul  1  1997