"I should have mentioned 256colors.pl, 256colors2.pl, and 88colors2.pl."

Thanks. I'll check those out; probably at the weekend.

"I had 2255 modules installed on my laptop and IO::Prompter was not one of them (now it is), so I think that proves it is not widely used."

I think that proves that it's slightly more widely used than it was last week. :-)