Chromatic's OO way

I wouldn't really call that an OO way. Sure, it uses can as a class method on main, but that's where the OOishness ends. It returns a plain coderef and executes it with a different dereferencing syntax than you used. I believe it is also the only alternative that does not use a symbolic reference.

To reinforce the point about being a plain coderef, this works:

foreach (@list) {
    my $coderef = main->can($_);
    &$coderef($_);
}
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And this does too, if you really want to get rid of all the pointy arrows:

foreach (@list) {
    my $coderef = UNIVERSAL::can('main', $_);
    &$coderef($_);
}
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Update: and if you want to see what I would consider the "OO way":

foreach (@list) {
    main->$_($_);
}
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But, frankly, I think that's very ugly. It uses a symbolic reference too. I would use can as chromatic originally did.