The hash order is always random, and has nothing to do with the order in which that hash was created.
Compare the following snippet with the original:
use Data::Dumper;
my %colorhash = ( CCgray => [ "0","0","0" ],
CCwhite => [ "1","0","0" ],
CCgrey => [ "0","2","0" ],
CCBlue => [ "0","0","3", ] );
my @light2dark = keys %colorhash;
print Dumper \@light2dark;
PS Have you enclosed your original program within <code>...</code> tags yet?
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