G'day Discipulus,

Unfortunately, it looks like you don't have a true color terminal. See "Term::ANSIColor - Supported Colors" for more about that.

I got similar errors to what you're seeing when making a typo while developing and testing. This sort of thing:

$ perl -E 'use Term::ANSIColor; say colored("black on white", "r0g0v0 
+on_white")'
Invalid attribute name r0g0v0 at -e line 1.
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However, there's no typo that I can see in what you've posted. You could do a couple of tests outside of my script.

$ perl -E 'use Term::ANSIColor; use Data::Dump; my $x = colored("black
+ on white", "r0g0b0 on_white"); say $x; dd $x'
black on white
"\e[38;2;0;0;0;47mblack on white\e[0m"

$ perl -E 'say "\e[38;2;0;0;0;47mblack on white\e[0m"'
black on white
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Both of those give me the text "black on white" in black on a white background.

I don't have a Perl on an MSWin platform to test. I don't know about dumb and not dumb TERM values. For what it's worth:

$ echo $TERM
xterm
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Sorry I can't be of more help. Is there anything in AM's post that's useful for you?

Edit (stupid typo fix): s/white foreground/white background/.