Just from what I have seen, early KE30/ KE35 came in:
Yellow
white
red
silver
Those are the main colours. I had a KE36 wagon that was metalic silver- gone grey. I have pictures of the TE37 Levin in dark green. Also the Jap spec GSL in metalic gold I think. Also Jap spec photos of blue. Baby blue was more common.
Latter KE55 models I have seen in:
Yellow, light yellow or faded?
white
red
metalic brown
baby blue
darker blue/grey (my car)
silver
The red ones are common, and often very orange like. I had a red KE38 wagon.
If you see black I think it must be a respray. I would like to know the factory list of colours if you ever find out.