I’d be interested to hear of anything too. I have had trouble finding anything particularly recent. I agree with the recommendation of Faber Birren. Johannes Itten is a favourite of mine, athough I can see that his work is rather subjective and dated. Jung too, with his differentiation of personality aspects and related colours – thinking-blue and feeling-red, sensation-green and intuition-yellow. Christine Ladd Franklin’s colour theory is also interesting, as is Max Lusche’s personality test.
More recently, Rikard Kuller, Antonio F Torrice, who related colours to bodily systems, and Hiroshi Sasaki, who Quantumcarl linked to, are among the few whose work I’ve heard of.
Going off on a tangent, (ignore this if needs be) this paper is not really psychological, but the most novel thing I’ve read about colour in a while. Not understanding the ideas involved however, it could be rubbish and I’d be obliged if anyone versed in QFT were to tell me so!
http://www.marilia.unesp.br/atividades/extensao/revista/v3/artigo2.html