I skipped over a few posts, so this article in the 1/14 SFChronicle science report might have been covered already.
The article included a patch of the color that caught my eye...celeste, identical to Bianchi's (by my eye). Perhaps Bianchi possessed some stellar knowledge?
Cosmos' Color is Turquoise, Scientists Say
"The universe, by definition, holds everything imaginable and then some. It even has color, astronomers have concluded.
If it were possible to see the universe as a whole, it would appear pale green.
That is the conclusion of two astronomers from Johns Hopkins University, who mixed the varied hues in visible light of 200,000 galaxies on their palettes and saw green. They announced the results last week at a meeting of the American Astronomical Society in Washington.
Although it takes a mixture of blue and yellow to make green in pigments, light sources combine in a different way. A blend of light from older red stars and younger blue stars produces what Karl Glazebrook of John Hopkins described as "the standard shade of pale turquoise, but a few percent greener."
Glazebrook and his colleague, Ivan Baldry of Johns Hopkins, said the research could help assess theories of star formation and evolution, one of the important questions in cosmology."
Cecilio Felix