Got an XRite ColorChecker as one of my birthday presents – you saw the Lego version of it already 
So after making a first quick camera profile with our LED light in the dining area, I had to try that of course:
This was converted using RawTherapee only, and with the newly created profile. I also tried some first “skin” shots (a quick portrait of Zuleikha), and so far the results look pretty good. I will definitely make more profiles for my flashes, and continue this – it saves me the double conversion and booting a virtualized Win7 for the sole purpose to run the Olympus Viewer 2 software.
Thanks for viewing.
I have been using a ColorChecker Passport to create profiles for my two cameras for about 2 1/2 years now. I am very pleased with the results. I had to watch a few Joe Brady tutorial videos before I really got all of it to sink in. At first I made too many profiles. It turns out that direct sunlight gives the same result as in the shade of the side of a building. That is because the spectrum of the light source doesn’t change (even thought the color temperature of the light does).
I didn’t know that the DNG profiles that you can create could be used with anything other than either Lightroom or Adobe Camera Raw. I’m a Lightroom user, and I have had no issues in creating the ColorChecker Passport DNG profiles as an Export process from Lightroom.
Well for using them with RawTherapee, you have to convert them to ICC profiles first. But that’s no problem; there’s a free conversion tool for doing so.