Render a graphical pattern where each pixel is colored by the value of 'x xor y' from an arbitrary color table.

fcn muncher{
   bitmap:=PPM(256,256);
   coolness:=(1).random(0x10000);  // 55379, 18180, 40, 51950, 57619, 43514, 65465
   foreach y,x in ([0 .. 255],[0 .. 255]){
      b:=x.bitXor(y);	// shades of blue
//      rgb:=b*coolness;                 // kaleidoscopic image
//      rgb:=(b*coolness + b)*coolness + b;  // more coolness
      rgb:=(b*0x10000 + b)*0x10000 + b;  // copy ADA image
      bitmap[x,y]=rgb;
   }
   bitmap.write(File("foo.ppm","wb"));
}();