Originally posted by adwb tick the embedded or better still use passport colour checker to create your own
You can also use the Adobe DNG Profile editor to create your own.
However without the use of a colour checker (or similar) this won't be easy.
I've personally have not achieved good results with the automated passport colour checker process (neither with a K100D nor a K-5 II). Colours are different but not better, AFAIC. I often prefer "Adobe Standard" over the calibrated profiles.
I'll try some more manual tweaking with the profile editor now. Looks promising.