isBlackOrVariant method
Implementation
bool isBlackOrVariant({int threshold = 30}) {
// Extract the RGB values from the color
var red = this.red;
var green = this.green;
var blue = this.blue;
// Check if the RGB values are close to zero within a given threshold
var isCloseToBlack =
red < threshold && green < threshold && blue < threshold;
return isCloseToBlack;
}