minimal static method
Minimal color scheme using a single foreground color.
Uses foregroundColor for all styled elements. Useful when you want
a unified look or minimal color usage.
Implementation
static HelpColorScheme minimal(Color foregroundColor) => HelpColorScheme(
heading: foregroundColor,
command: foregroundColor,
option: foregroundColor,
description: null,
error: foregroundColor,
emphasis: null,
namespace: foregroundColor,
);