colorLevel property
Define the Colors associated for each level You can override according to your preferences
Assign a color to Level.FINEST in LoggerColorful.colorLevel to remove the rainbow
Implementation
Map<Level, AnsiColor> colorLevel = {
Level.SHOUT: AnsiColor.highIntensityBackgroundRed,
Level.SEVERE: AnsiColor.boldRed,
Level.WARNING: AnsiColor.boldYellow,
Level.INFO: AnsiColor.blue,
Level.CONFIG: AnsiColor.purple,
Level.FINE: AnsiColor.green,
Level.FINER: AnsiColor.boldGreen,
Level.FINEST: AnsiColor.highIntensityBackgroundGreen,
};