Nice find @RedRider.
Without doing any research, I would probably pick platinum as the most valuable... but it's really a toss up between most of them.
I would probably put tangerine near the bottom of my list if I didn't know any better, but both tangerine.ca and tangerine.com were bought by a huge bank (i.e. scotiabank). It's also nice to see the .COM forwards to the .CA, and not the other way around. It goes to show this Canadian bank is proud of using the .CA over .COM. I guess the .CA also ranks better for google searches in Canada, but I doubt they ever had much competition to begin with.
And does kiwi really qualify as a colour?
I wouldn't have thought so and I don't think it is on any official basis, but i guess the same goes for tangerine, apricot, and a few others. Either way, I understand why them included them and owning any of them would be awesome.