Blue Ellipse

float r;

float g;

float b;

float a;

int minDiam = 10;

int maxDiam = 100;

int lineThickness = 10;

color lineColor = color(0, 0, 0);

int diam;

int increment=5;

void setup() {

  size(400, 400);

  diam=100;

  fill(#0018ff);

}

void draw() {

  r = random(255);

  g = random(255);

  b = random(255);

  a = random(255);

}

void mouseDragged(){

    background(100);

    noStroke();

    fill(#0018ff);

    ellipse(mouseX, mouseY, r, g); 

    diam=diam+increment*15;

    if (diam>maxDiam||diam<minDiam){

    increment=-increment;

    }

} 

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