Now I am suspecting that the color of the 5f6 of plutonium of silvery
white that matches the elemental color of plutonium is related to
other numbers in fundamental physics such as thermodynamical numbers
such as the Microwave Background Blackbody radiation. We know it is
2.71 degrees Kelvin. So whereas the JohnsHopkins researchers are
gathering empirical data for a Cosmos color of silvery-white of
200,000 galaxies, I am thinking that the 2.71 degrees Kelvin is
intrinsically related to the final outcome of a color just as in
blackbody radiation color is a result of the cavity radiation. So the
color should be related to 2.71 degrees Kelvin and that the uranium
atom has a different cavity radiation not equal to 2.71 (worked it out
a long time ago from Debroglie's thermodynamics of a electron in
isolation). Anyway the number of degrees for a 5f4 for uranium
blackbody cavity is a specific degrees kelvin which should correspond
to a different color for uranium and unlike the color for plutonium.

Interesting to attack this problem by matching various other physical
numbers.

Archimedes Plutonium
www.iw.net/~a_plutonium
www.archimedesplutonium.com
whole entire Universe is just one big atom where dots
of the electron-dot-cloud are galaxies