Error:invalid conversion from 'int*' to 'int' when returning array from function

[J-M-L]

You are saying that your function returns an int and you are not..

[color=red]int[/color] getRGB(String req) {
  static int colors[3];
  ...
  return(colors);
}

change the signature, colors is an array of int, so the variable name is a pointer to an int (so an int *)

Using the String class is not a good idea in general