Distinguish a limited number of values without regard for order.
)],
whites => [qw( 1;30 0;37 1;37 )],
greys => [map {"38;5;$_"} 0, 232..255, 15],
)],
whites => [qw( 1;30 0;37 1;37 )],
greys => [map {"38;5;$_"} 0, 232..255, 15],
+ random => [map {"38;5;$_"} List::Util::shuffle(17..231)],
rainbow=> [map {"38;5;$_"}
196, # r
(map { 196 + $_*6 } 0..4), # +g
rainbow=> [map {"38;5;$_"}
196, # r
(map { 196 + $_*6 } 0..4), # +g