A grumpy old man in comics is often depicted as stubborn, short-tempered, and set in his ways. He might complain a lot and have a hard time accepting new ideas.
Araki's manga is usually presented in black and white. Coloring the entire manga would be a huge undertaking and might not fit with his artistic approach or the publishing requirements.
The barn house cartoon show could offer stories like a family moving into the barn and adjusting to life there, or perhaps a group of friends discovering a hidden treasure in the barn. It could even show the daily life of a farmer and his interaction with the barn and its occupants.
Hard boiled comics are known for their hard-hitting and edgy content. The heroes are not always perfect, and the settings are often urban and seedy. The art style is often bold and stark to match the intense stories.