The red/brown discrepancy actually seems pretty reasonable. Some red and brown shades are similar, so I can see how someone might label brown as red. Every culture recognized different colors, in both modern and ancient times. In Japan, most shades of green were historically considered blue, while some cultures described many shades of blue as different colors that we would just label "blue".
Brown isn't even considered a color to some because it's technically just a darker shade of orange, similar to how pink is just a lighter shade of red.
>days were less than 24 hours long in the distant past
Never heard this one before. How did they measure hours? Usually around that period I just heard time mentioned in the context of day/night rather than proper measurements. (sunrise, sunset, midday, etc)
Are you saying you won't write about your own death in your autobiography?