I read many topics about the color problems...I haven't found any solution so far.
When I use flash, white turns kind of yellow, the background which is meant to be white displays very thin lines and is yellow-ish too.
When I do not use flash there is no problem.
Before I used the free version, colors were perfect!
I downloaded the version 2.1.1 and used the color correction it didn't work. I also converted my images to sRGB with photoshop.
Thanks for your help!