Outline:

1. Mini-quiz
2. Representing color in a computer
   • RGB
   • Exercise 1
3. Working with images
   • Image objects in graphics.py
   • getting a pixel’s color
   • Exercise 2
   • creating a random image
   • Exercise 3
4. Color models
   • additive versus subtractive color
   • how humans see color
   • how computers output color
   • Exercise 4

Reading assignment (to be completed by the next class):

• Zelle sections 4.8.4-4.8.5 (pp. 120-121)