Update - the script helped things look better in general but after using LibreOffice Write my eyes were going goofy on the thin characters (getting the bleed around l's and i's etc - looked red on my monitor - can't remember the technical term)
Played with "appearance preference" settings and in "font rendering details" ended up with
"smoothing - grayscale" "hinting - slight" "subpixel order - VBGR"
I have an LCD - Acer V223w, 22", @ 1680 x 1050 (low end)
It's not perfect but it made it much better
seems like someone previously mentioned the "grayscale and slight" but for my LCD the subpixel order made it better also









