commandColorRGB function
Function of str_color_rgb command
Implementation
String? commandColorRGB(List args) {
final String? str = expEval(args[0]);
final double? red = expEval(args[1]) / 255,
green = expEval(args[2]) / 255,
blue = expEval(args[3]) / 255;
bool? bg = false;
if (args.length > 4) bg = expEval(args[4]);
final pen = rgbPen(red!, green!, blue!, bg!);
return pen(str!);
}