Interesting indeed. I tried to scan with simple-scan and this doesn’t introduce this red tint:
However, this UI is not conducive for mass-scanning a bunch of cover art, so not a long-term solution.
I tried with Skanlite too, but that had the same results as XSane, probably due to being just a different way to interface with sane.
Curious that resetting the SANE settings does not reset whatever colour calibration is going on. Maybe there are other data being stored somewhere that I didn’t find.
I got the scanner second-hand and I really can’t remember if I got any software with it. Regardless, even if there was software bundled, it would likely be Windows-only and not run under Linux. SANE is the way to deal with scanning under Linux.