I'm pretty new too but trying to help out... the August issue of Classic Bike says the 71 Bonneville was "Tiger Gold/ Black".
Seems like I ran across a web site that listed paint colors for all models too. Sorry but I have been looking at so much info on Bonneville's lately that I can't remember what it was at the moment.
I'll see if I can dig it up. There will be someone along soon that will help out further I'm sure, very help-full group here