-- Creates a new image object of size 640x480 pixel and 32-bit color depth
img = image(640, 480, 32)

-- Fills image with plain red
img.fill(img.rect, rgb(255,0,0))

-- Gets the color value of the pixel at point (320, 240)
col = img.getPixel(320, 240)

-- Changes the color of the pixel at point (320, 240) to black
img.setPixel(320, 240, rgb(0,0,0))