I think the mod SuperO would agree with me whan I say that the valks in question are most probably white and their color are affected by the twilight lighting effect in DYRL, where the Super O looks to be tan and seem to have a purple haze underneath.
hehe, purple haze...
The Ostrich is actually white and red-orange, like the Bandai and not like the way Yamato recently released it.
Hehe, I'm just trying to awaken another one of those old debates that never get settled.
But that Valk on the beach is most likely just another whitish valk that looks tan due to lighting.