val s = Staging;s.clear
def rancol=color(random(256),random(256),random(256))
val cs=for(i<-0 to 100)
    yield (
        s.circle(random(300)-150,random(200)-100,random(25-10))
        ,random(10)-5,random(10)-5)        
s.loop{
    Thread.sleep(100)
    for((c,x,y)<-cs) c.translate(x,y)
}