It appears to be time get a new monitor for my desktop. Last night's photo processing binge (four months late) may well be the last straw for discovering inconsistent and bad colour balance issues only after I look at the files again on a different machine. Bad I expect. Inconsistent is another problem entirely, and means bad can't be made up for in bulk by script. Still, funky colour-balanced half-fixed and all, I'm content enough with some of them to share now.