Ji : Drawing with code

http://www.openprocessing.org/sketch/116288

Screen Shot 2013-10-17 at 7.38.36 PM

Here is my drawing that I made with ellipses and lines. I wanted to make a simple drawing with only lines and circles, so I decided to draw a sky with bubbles and rain. I like the color in the background and the transparency of the bubbles. However, a problem on this sketch is that I cannot see the blue background after I uploaded on OpenProcessing. It only shows bubbles in white background..

For Code:

size(310,400);

background(198,228,240,20);
stroke(255);
line(30,20,40,300);
line(70,50,80,330);
line(120,50,130,170);
line(220,70,230,270);
line(150,100,170,400);
line(300,90,280,370);
line(250,200,270,400);
line(190,100,170,350);
line(190,0,170,130);
line(60,0,50,230);
line(300,0,270,230);
line(60,0,50,230);
line(0,250,30,430);
noStroke();
fill(104,182,155,40);
ellipse(50,50,30,30);
fill(134,182,155,40);
ellipse(50,70,60,60);
fill(104,182,155,40);
ellipse(250,250,30,30);
fill(104,182,155,40);
ellipse(230,80,30,30);
fill(134,232,105,40);
ellipse(250,170,60,60);
fill(222,227,111,40);
ellipse(250,130,90,90);
fill(104,182,155,40);
ellipse(150,350,30,30);
fill(207,67,42,40);
ellipse(150,370,60,60);
fill(104,182,155,40);
ellipse(150,250,30,30);
fill(207,67,42,40);
ellipse(250,270,60,60);
fill(207,67,42,40);
ellipse(80,270,60,60);
fill(134,232,105,40);
ellipse(155,100,70,70);
fill(207,67,42,40);
ellipse(150,70,60,60);
fill(134,232,105,40);
ellipse(55,370,70,70);
fill(207,167,42,40);
ellipse(50,300,60,60);
fill(104,182,155,40);
ellipse(150,350,30,30);
fill(207,167,42,40);

ellipse(150,370,60,60);