I kind of remembered that someone testing newer Canon cameras said, that color rendering had changed in comparison to earlier models.
Therefore, I downloaded two files from dpreview.com, a .CR2 and a .CR3 file with shots taken off of the standard test scene and opened them in several raw editors. I found slight differences in color rendering as seen in DPP, Lr and DPL. It seems that rendering of colors in CR3 files is less saturated than in .CR2 files. If we exclude differences in lighting, we must conclude that Canon has changed their “color science” a little bit.
Most raw developers try to mimic OOC JPEG appearance, which means that colors can look different when a camera maker changes the looks of OOC JPEGs. I found that standard rendition of apps changed over time too, I’ve seen it in Lr and C1, less so in DPP. Newer versions tend to produce more saturated and contrasty images.
The lesson I learned from this is to make my images as I like them to be rather than to make then correctly render whatever is in the shot - except for reproductions, where I want the result to be as close to the original as possible…which means that, if I were into reproductions most of the time, I’d always use the same gear to keep my workflow from wandering.