use colour if not pipe or use settings, on help in python version

Signed-off-by: Mattias Andrée <maandree@operamail.com>
implement colour settings in java version

Signed-off-by: Mattias Andrée <maandree@operamail.com>
implement colour settings for help in bash version

Signed-off-by: Mattias Andrée <maandree@operamail.com>