void setup()
{
size(500,500);
}

void draw()
{

}

void mouseClicked()
{
background(255,255,255);
for (int x = 0; x < 500;x+=25)
{
for (int y = 0; y < 500;y+=25)
{
textSize(25);
fill(int(random(255)),int(random(255)),int(random(255)));
text(int(random(0,10)),x,y);
}
}
}