There is a clever work-around for the disappearing cursor, at least in
Photoshop 6.

Problem: If the base image is at the RGB value 127,127,127, then the
cursor (which is also the same RGB value) becomes invisible. This
happens only at or near certain RGB values - at other background
colors, the cursor can be seen because its gray color contrasts with
the image, or because it changes to a white or black color which
contrasts with the image.

So given that a background image of a certain gray color makes the
cursor "invisible", despite Photoshop's best efforts to make the
cursor visible against all backgrounds, what is one to do?

Solution: (1) change the image to a different color that allows the
cursor to be seen, (2) make the rubber stamp changes, then (3) delete
the color change made in step one, while retaining  the image changes
in step two.

Method: 
Enable Non-Linear History
Change Output Levels
Make Rubber Stamp corrections
Cancel the Change Output Levels operation

First, go to the History palette, click on the little arrow to get to
History Options, and check "Enable Non-Linear History". This sets the
stage for what is to follow.

Next, open the image in question. No need to select anything - you
want to make this first change to the whole image. Go to Image >
Adjust > Levels and change the Output Levels from zero to some other
value that gets the area to be rubber stamped out of the offending
127,127,127 gray color. Say, change Output Levels from zero to 75.

Then the cursor will be visible, because the colors of the whole
picture will have changed. Go ahead and make the Rubber Stamp
corrections desired. Ignore the fact that the whole image looks crappy
- you'll get it looking right in a minute. Just make the Rubber Stamp
changes and trust they will revert to the correct colors in a minute.

After finishing the rubber stamping, go to the History Palette. Select
the one line where the Output Levels was changed, and drag it to the
little trash can at the lower right part of the palette. This
eliminates only that one Output Levels change.

Result: So now you are back at the original image, with the rubber
stamp corrections made, and the Output Levels change (which allowed
the cursor to become visible) has been deleted as if it never
happened.

The net result is that Output Levels of the image was changed to allow
the cursor to be visible, then that Output Levels operation was
canceled as if it never happened.

--
John Mustarde
www.photolin.com
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