Imagine I have an educational website which hosts high school students and presents lessons like chemistry, physics, mathematics, etc. Now I want to give each one of my lessons a unique color. I thought maybe there is a psychological thing about this. Is there? If so, could any one give such resource that tells me what color is suitable for chemistry and so on.
I haven't ever seen material which describes links between colors and some knowledge fields. To my mind, it depends on your own experience. But there are a lot of material about common feelings of different colors, that could be helpful for design, for organization of any kind of information. Look here and here.