int sizeX = 500;
int sizeY = 400;
int bleedLength = 5;
void setup()
{
size(sizeX, sizeY);
}
void draw()
{
frameRate(5);
background(#000000);
for (int x = 0; x <= sizeX - bleedLength; x = x + bleedLength)
{
int depth = int( random(sizeY) );
rect(x, 0, bleedLength, depth);
noStroke();
fill(#FF0000);
}
}