I still have the original hood from my 816 and the white in the decals is pretty much a pure white. The Canvas White I used to repaint the hood is nearly a dead ringer for Alaska White. The color codes are still posted in places if you want to have a shop mix up a quart for you. Industrial Touchup can also do Alaska White in a rattle can.
I’m not convinced that the 800-series wheels were Alaska White. Tough to find an original wheel in anywhere near a good enough condition to make a determination. I’d wager the factory bought the wheels from their supplier already painted.