For those who are curious it’s properly balanced. There are 24 slots available. Pairs: 1-13, 2-14, 6-18, 9-21, 10-22 Triple: 8-16-24 All pairs and triples have their centers of mass on the rotation axis.
With cups it’s pretty much painless on linux form me, though some distros have a very restrictive firewall configuration out of the box, so you have to whitelist it before using. Not too complicated, but can be very frustrating for new users who never touched a firewall before.
I think it’s one of those early color photographs. Basically, a photographer would take three photographs, each with a different color filter. Those photographs were black-and-white, where the value corresponded to the saturation of one of the filter’s colors. They were then projected onto a final image using collotype printing with a different dye for each black-and-white photograph. This process can give you all sorts of colors by mixing three primary colors of dyes, but it’s tricky to make photographs align perfectly. As you can see, there are stripes of cyan, green, and red on the contour of those people, as well as some blur, and that’s because it’s hard to stand still between photographs, or a wind could make your clothes move a little, etc.