I'm coming late to this one...
There are significant colour considerations beyond ease of reading and 'blindness' that can also prove critical, i.e. ethnic, cultural, emotional, gender preferences...
Red is especially problematic as it has considerable social, emotional differences in your mentioned markets, i.e. China::luck, Japan::danger.
There is a lot of literature on this subject unfortunately most is behind paywalls or in print.
One interesting resource is the zoho.co.uk interactive version
of the Colours in Culture
data visualisation from the cover of David McCandless‘ book "Information is Beautiful".