It's been about 15 years. There were a number of books as well as other materials. If I remember correctly this was one of them:

https://www.amazon.com/Appearance-Models-Imaging-Science-Tec...

I went looking around to see if I could find a better resource to help you dive into the topic in a more accessible manner. To my surprise Khan Academy seems to have a decent sequence of lectures on Color Science. I didn't watch the videos but the topics cover a reasonable portion of the basic knowledge one needs to start exploring Color Science:

https://www.khanacademy.org/partner-content/pixar/color