shadesOfGreyTransform static method
Transform that removes the colors, leaving only shades of gray.
Use it like this: Themed.setTransform(ColorRef.shadesOfGrey);
Implementation
static Color shadesOfGreyTransform(Color color) {
int average = (color.red + color.green + color.blue) ~/ 3;
return Color.fromARGB(color.alpha, average, average, average);
}