If your terminal uses a white background (which research says is optimal for reading) then light grey is not a particularly helpful color for the usage description. Maybe just not color it at all?
The colour is actually being set to white but the terminal is mapping it to light grey to make it not completely invisible. I'll make it use the default for log-level messages.
If your terminal uses a white background (which research says is optimal for reading) then light grey is not a particularly helpful color for the usage description. Maybe just not color it at all?