darken method
Darkens the color by a specified percentage.
The percent
parameter specifies the percentage by which the color should be darkened.
The value of percent
should be between 0 and 100.
Returns a new Color object that represents the darkened color.
Implementation
Color darken([int percent = 10]) {
assert(0 <= percent && percent <= 100);
final f = 1 - percent / 100;
return Color.fromARGB(
alpha,
(red * f).round(),
(green * f).round(),
(blue * f).round(),
);
}