Thanks! I think I understand that, and I know that at the very least a simple matrix from dcraw will be applied.
But, I wanted to reply with some actual examples of color differences with and without Adobe DCP files for my camera, and, to my surprise, things are different from they were three years ago – whether it’s dcraw, RT, and/or something else I don’t know. I revisited some old files where I recalled having color troubles, but I couldn’t reproduce them. Here are a couple of examples where, three years ago, the colors without DCP would have been wrong (both “not as pleasant” and “not as I remember them”). Left-hand side is “camera standard”, and right-hand side is with Adobe DCP Standard for Olympus EPL-5. Nothing has been done to the images except applying the Neutral profile and selecting the DCP (look and base only).
So, I’m about to backtrack: for my camera on RT 5.7, I actually prefer RT’s standard color matrix. The DNG seems to produce slightly yellower greens and bluer reds and purples.