While color psychology has a set of more or less accepted premises, it varies according to age, geographic and cultural differences (between other variables). Now I'm building an app for elder people in US and struggling a bit with color choices. National Institute of Aging has a nice and in depth document, however, when it comes to color it only says to use high contrast black on white colors, which is not an option for me. Nielsen has great insight on usability design for the elderly, but again, nothing about color
I was searching on Google and an offline library, but couldn't find anything that helps me, so would like to ask if there's any CURRENT studies on color psychology for the elder, preferably restricted to US. Personal experiences from all great UX'rs around here greatly appreciated, of course!