Have done some more scanning, trying to get better colors and also trying to scan the inlays stacked. I noticed that the scanner software automatically adjusted the image settings after doing a preview scan so this time I reverted all settings to their default values before performing the actual scan and there were no automatic enhancements enabled.
It was really hard aligning the images when doing a stacked scan please just consider the overall image result and not the alignment of the images. I can re-scan the combined images and try to align them better if you think it is worthwhile.
Green House inlays has also been scanned and images are uploaded as well.