Websites and online books
http://hubel.med.harvard.edu/book/bcontex.htm
Complete textbook, free to read online or download.
Mollon, J. D. (2003) The origins of modern color science. From Shevell, S. (Ed) Color Science, Optical Society of America, Washington.
http://vision.psychol.cam.ac.uk/jdmollon/papers/MollonColorScience.pdf
Excellent chapter on the history of colour science after Newton.
Webvision: The Organization of the Retina and the Visual System (University of Utah).
http://webvision.med.utah.edu/
Comprehensive medical website on vision science.
The Joy of Visual Perception (Peter Kaiser): Online book on vision including colour vision; you can even ask the author questions (but read the book first!).
http://www.yorku.ca/eye/titlepg.htm
http://www.yorku.ca/eye/question.htm
Color Vision (De Valois and Webster)
http://www.scholarpedia.org/article/Color_vision
http://www.colour4free.org.uk/
Visual Perception (Daniel Chandler): Various topics on visual perception (not colour)
http://journalism.uoregon.edu/~cbybee/j388_f08/visindex.html
Colour and Colour Vision: Background Information (Colour and Vision Research Laboratories).
http://www.cvrl.org/
The Bases of Colour Vision (Brian Wagner and Douglas Kline)
http://psych.ucalgary.ca/PACE/VA-Lab/Brian/default.htm
A Chronological History of Vision Research (Jack Yellott)
http://web.archive.org/web/20040407004054/http://aris.ss.uci.edu/cogsci/vision/yellott_1600.html
http://web.archive.org/web/20040407004054/http://aris.ss.uci.edu/cogsci/vision/yellott_dates.html
http://flash.lakeheadu.ca/~mwesner/Overhead%20S+P.html
Scientific papers
Online/downloadable interactive programs
Project LITE - Atlas of Visual Phenomena: Dozens of demonstrations of optical illusions and visual phenomena. NOTE: The demonstrations of additive and subtractive mixing used in the course are from this site:
http://lite.bu.edu/ (Online or download - Windows/Mac)
http://lite.bu.edu/vision/applets/lite/lite/lite.html
http://lite.bu.edu/vision/applets/Color/Addition/AdditionMove.html
http://lite.bu.edu/vision/applets/Color/Subtraction/SubtractionMove.html
Color Uncovered (Exploratorium, Ipad and Android)
http://www.exploratorium.edu/explore/apps/color-uncovered
Spektral (Pehr Sallstrom): Programme for visualising the relation between colour and spectral energy distribution
http://www.pscolour.eu/
Software for Visual Psychophysics: an Overview (Hans Strasburger)
http://visionscience.com/documents/strasburger/strasburger.html
Brown University: Series of applets for demonstrating colour theory, such as the interaction of spectral distribution and reflectance curves on reflected light.
http://www.cs.brown.edu/exploratories/freeSoftware/catalogs/color_theory.html (Online/Windows/Mac)
efg2 Computer Lab Color Projects: Various free programs.
http://www.efg2.com/Lab/Graphics/Colors/index.html (Windows)
Huedoku (Gabriel Mott)
https://angel.co/projects/157480-huedoku-a-fun-game-that-expands-your-mind
Colour vision tests
Online Color Challenge (Xrite)
http://www.xrite.com/custom_page.aspx?PageID=77
Isihara colour vision test
http://colorvisiontesting.com/ishihara.htm
Visual Illusions and Phenomena
87 Optical Illusions & Visual Phenomena (Michael Bach).
http://www.michaelbach.de/ot/
Optical Illusions (eChalk): Outstanding illustrations of influence of surround on colour perception.
http://www.echalk.co.uk/amusements/OpticalIllusions/colourPerception/colourPerception.html
Akiyoshi's Illusion Pages (Akiyoshi Kitaoka)
http://www.ritsumei.ac.jp/~akitaoka/index-e.html
Brightness illusion catalogue
http://www.psy.ritsumei.ac.jp/~akitaoka/BrightnessIllusionCatalogue2008.doc
Illusions and Demos (Edward Adelson):
http://web.mit.edu/persci/people/adelson/illusions_demos.html
Adelson, E., 2000. Lightness Perception and Lightness Illusion.
http://persci.mit.edu/pub_pdfs/gazzan.pdf
Lightness Perception and Lightness Illusions (interactive movies based on Adelson paper)
http://web.mit.edu/persci/gaz/gaz-teaching/index.html
The checkerboard shadow illusion:
http://web.mit.edu/persci/people/adelson/checkershadow_illusion.html
Same Same or Different (Gabriel Mott)
https://angel.co/projects/75141-same-same-or-different
Color Is Relative (Gabriel Mott)
https://angel.co/projects/75143-color-is-relative
Some more illusion sites:
http://www.sandlotscience.com/
http://www.illusionworks.com/
http://dragon.uml.edu/psych/illusion.html
http://www.exploratorium.edu/exhibits/f_exhibits.html
http://www.ski.org/Vision/Fun/Illusions/index.html
http://anstislab.ucsd.edu/illusions/