i do not think you did put any time into the project yet - apart from using it. there are people who spent a lot of time on making it happen, and had they had the "oh what we have is okay" attitude, chdk would arguably not even exist.
i am glad they did bother tho, and tend on spending my development time on something that interests me, which now happens to be finding out why color calibration fails with dng4ps2. if you do not want to help with it, that is your decision. that would lead into a discussion, however, which doesnt fit in here.
back to topic (for someone who might be interested): artden seems to be quiet about the problem, so i am quite puzzled. this one (just a minor modification) seems to be better, but still too blue-ish. not enough experience with color conversion stuff...
0,827547 -0,290458 -0,126086 -0,012829 0,530507 0,050537 0,005181 0,068183 0,245014