Depends on ambient light and your cones (photoreceptors that detect and distinguish colors). I suspect that it is indeed white (or cream, a very light brown at most) and gold or a similar "metallic" hue. We detect blue quite distinctly at around 450nm (nanometers) but the blue cones are located outside the fovea centralis and we have far fewer of these then red and green cones.
Worth noting is that when red and / or green are in focus (and to my knowledge brown is an amalgamation of these, and not a distinct hue) blues actually look rather "fuzzy". This effect is called chromatic aberration, and is due to blue's larger refractive index; in layman's terms the eye can only focus on colors of similar refractive index because different refractive indices lead to different focal lengths. In essence your eye cannot be both "red sighted" and "blue sighted" at the same time.
The areas that one might read as blue would thus be much "fuzzier" if they were actually blue, thus I suspect they are white but appear blue due to the ambient light, which is is obviously quite bright. This leads to distortions in depth and color perception, likely due to an "overload" of the rods (photoreceptors that detect luminosity).
Using a computer to come up with RGB values will yield a different "readout" than the human eye since computers don't have lenses that perceive light at different focal lengths. That said, the RGB values wouldn't be "wrong", just inconsistent with the human eye's readout.
What would be really fascinating would be to get a readout from a mantis shrimp. They have 12 different photoreceptors, and can detect UV and polarized light. Folks that study these cool crustaceans (their claws can "punch" with a force of close to 20 newtons, and actually create cavitation bubbles that implode into shockwaves as they pass through water!) suspect that their broad range is advantageous in their natural habitat: brightly colored coral reefs, inhabited by brightly colored fish and other crustaceans. I'm going to guess that the ambient light is probably polarized as it passes through seawater, so the mantis shrimp evolved photoreceptors to detect these changes for some predator / prey advantage.