Random color circles drawing tool

//global variables to describe size

int xsize = 1000;

int ysize = 1000;

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//these global variables to describe color  

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int rcolor = int(random(0-255));

int gcolor = int(random(0-255));

int bcolor = int(random(0-255));

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void setup () {

size (xsize,ysize);               //set the size using global variables

background (255);

smooth ();

noStroke();

}

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void draw () {

stroke(0,20);

fill (rcolor, gcolor, bcolor);     //set fill color using global variables

println(rcolor); //print rcolor

}

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//this will run when a keyboard key is pressed

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void mouseDragged () {

int r = int(random(1,120)); //set a random size value that continually refreshes

fill (rcolor, gcolor, bcolor,random(0,30)); //set a random color

ellipse (mouseX, mouseY, r, r); //use the mouse to draw with and use r variable to determine random size

​

}