add maintainer for ONKYOdb.pm

git-svn-id: svn://svn.code.sf.net/p/fhem/code@5465 2b470e98-0d58-463d-a4d8-8e2adae1ed80
add more Color space conversions and some description

git-svn-id: svn://svn.code.sf.net/p/fhem/code@5466 2b470e98-0d58-463d-a4d8-8e2adae1ed80
typo

git-svn-id: svn://svn.code.sf.net/p/fhem/code@5467 2b470e98-0d58-463d-a4d8-8e2adae1ed80