tweak method
Implementation
Color tweak(Color base, double bf, double df, double lf, double wf, {Color? darker, Color? lighter}) {
darker ??= dark(base);
lighter ??= light(base);
return Color.lerp(Colors.black, Color.lerp(Colors.white, Color.lerp(darker, Color.lerp(lighter, base, lf), df), wf), bf)!;
}