I'm trying to flip the webcam while using this colour tracking code. How do I do this?

import processing.video.*;

// Variable for capture device
Capture video;

// A variable for the color we are searching for.
color trackColor; 

void setup() {
size(320,240);
video = new Capture(this,width,height,15);
// Start off tracking for red
trackColor = color(255,0,0);
smooth();
}

void draw() {
// Capture and display the video
if (video.available()) {
video.read();
}
video.loadPixels();
image(video,0,0);

// Before we begin searching, the "world record" for closest color is set to a high number that is easy for the first pixel to beat.
float worldRecord = 500; 

// XY coordinate of closest color
int closestX = 0;
int closestY = 0;

// Begin loop to walk through every pixel
for (int x = 0; x < video.width; x ++ ) {
for (int y = 0; y < video.height; y ++ ) {
int loc = x + y*video.width;
// What is current color
color currentColor = video.pixels[loc];
float r1 = red(currentColor);
float g1 = green(currentColor);
float b1 = blue(currentColor);
float r2 = red(trackColor);
float g2 = green(trackColor);
float b2 = blue(trackColor);

// Using euclidean distance to compare colors
float d = dist(r1,g1,b1,r2,g2,b2); // We are using the dist( ) function to compare the current color with the color we are tracking.

// If current color is more similar to tracked color than
// closest color, save current location and current difference
if (d < worldRecord) {
worldRecord = d;
closestX = x;
closestY = y;
}
}
}

// We only consider the color found if its color distance is less than 10. 
// This threshold of 10 is arbitrary and you can adjust this number depending on how accurate you require the tracking to be.
if (worldRecord < 10) { 
// Draw a circle at the tracked pixel
fill(trackColor);
strokeWeight(4.0);
stroke(0);
ellipse(closestX,closestY,16,16);
}
}

void mousePressed() {
// Save color where the mouse is clicked in trackColor variable
int loc = mouseX + mouseY*video.width;
trackColor = video.pixels[loc];
}