Lots of Light and Color Information
Visit this site to have access to all sorts of interactive demonstrations about light.
Use Jello Optics to help illustrate the science of light.
Investigate color vision. Includes a teacher guide and a student guide.
Check out this concept map full of light, vision and color science information — lots of good stuff.
Fun, fun, fun — optical illusions.
Explore color at colormatters.com.