Dear Maintainer,
Trying to use Graphics::ColorObject fails without Graphics::ColorNames::WWW:
$ perl -MGraphics::ColorObject -e0
Can't locate Graphics/ColorNames/WWW.pm in @INC (you may need to install the Graphics::ColorNames::WWW module) (@INC contains: /etc/perl /usr/local/lib/x86_64-linux-gnu/perl/5.30.3 /usr/local/share/perl/5.30.3 /usr/lib/x86_64-linux-gnu/perl5/5.30 /usr/share/perl5 /usr/lib/x86_64-linux-gnu/perl-base /usr/lib/x86_64-linux-gnu/perl/5.30 /usr/share/perl/5.30 /usr/local/lib/site_perl) at /usr/share/perl5/Graphics/ColorObject.pm line 2093.
BEGIN failed--compilation aborted at /usr/share/perl5/Graphics/ColorObject.pm line 2093.
Compilation failed in require.
BEGIN failed--compilation aborted.
It seems to be missing a dependency on libgraphics-colornames-www-perl.