Personally I think the (dark)red error messages emitted during development are hard to read.
There is not enough contrast if the background of the terminal is black.
I know how to change the color manually per message:
Logger.error("error text here", ansi_color: :light_magenta)
How can this be done in the configuration file?
config :logger, :console, format: "[$date $time] $metadata[$level] $message\n", metadata: [:request_id, :initial_call], colors: [enabled: true]