Canvas Demo 1

<eval> canvas.clear(); for (int i=0;i&lt;6;i++){</eval>

   for (int j=0;j<6;j++){
     canvas.setcolor("rgb(" + (int)(255-42.5*i) + "," + 
                      (int)(255-42.5*j) + ",0)");
     canvas.fillrect(j*25,i*25,25,25);
   }
 }