I don't know whether you have this in mind, but the way in which protons and neutrons are made of quarks is similar to what I described in this post, with the "colours" associated with the strong force. More concretely, we take one green quark, plus one red quark plus one blue quark, and this gives a white proton or a white neutron (the difference between protons and neutrons come from the flavours of the quarks considered).

On the other hand, you exactly got the most important point for dark matter searches at the Large Hadron Collider: we reconstruct the properties of the invisible from information on what is visible. The only difference with respect to what you wrote is that here, we use the information of the final-state objects (i.e. everything that leaves tracks and/or hits in the detector). From this, we reconstruct not only the intermediate particles, but also the final-state invisible objects (that could be Standard Model neutrinos, and dark matter of we are lucky).

Though writing this blog takes you a long time, I'd like to affirm your ambition to review information in previous blogs before you move on to new concepts. This is extremely helpful.

I actually hesitated a lot to do so, as this takes a good third of the blog. However, I decided to think about potential new readers who may not have the time to go through older blogs (although the links are there if they want to). I am building my "writing strategy" with time :D

PS: I was very pleased to see @yaziris showing up here. I enjoy reading his regular physics blogs too.