Sorry to disappoint you, but Uno is a light palomino and will golden up next season, if he follows his sire's and his siblings' coloring tradition.
You should post a request to see people's WHITE horses, sometime. It would be interesting to see the result. (I suspect most of them will be technically grayed out horses -- which can be very striking!)
Uno is a very nice golden palomino color if not clipped or a few weeks after clipping I did not clip him while i had him earlier this season and he shed out to a deep rich color Maybe I love him so because he satisfies my "Trigger" * Roy obsession as a child!