#include <X11/Xlib.h>
#include <X11/Xmu/WinUtil.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

int main(int argc, char **argv)
{
  Display *display;
  Window target;
  char *color_name;
  unsigned int width;
  XColor color;
  Colormap colormap;

  if (argc != 4) {
    char *name;
    name = strrchr(argv[0], '/');
    name = name ? name+1 : argv[0];
    fprintf(stderr, "usage: %s window-id color width\n", name);
    exit(1);
  }

  target = strtol(argv[1], NULL, 10);
  color_name = argv[2];
  width = (unsigned int)atoi(argv[3]);

  if ((display = XOpenDisplay(NULL)) == NULL) {
    fprintf(stderr, "cannot open display\n");
    exit(1);
  }

  colormap = DefaultColormap(display, DefaultScreen(display));

  XAllocNamedColor(display, colormap, color_name, &color, &color);

  XSetWindowBorder(display, target, color.pixel);
  XSetWindowBorderWidth(display, target, width);

  XCloseDisplay(display);
  exit(0);
}