"Color possesses me. I don't have to pursue it. It will possess me always, I know it. That is the meaning of this happy hour: Color and I are one. I am a painter."
Paul Klee

Most of us in scientific research often expresses our results using a multitude of colours. Temp, salinity, sealvels, pressure and what not. But which colour to what is the question often or sometimes went through our heads and sometimes it's frustrating too. Oreagon state university's geography division has answers to many of our problem related to colours. Some of us might have seen this link. Hope this will be interesting and useful to all of us
http://geography.uoregon.edu/datagraphics/EOS/index.htm
cheers
nuncio