arrgh, sorry. Misspelled. It now reads:
#------------------ FvwmPager: Swallowed by ButtonBar
#------------------------------------------------------------------------------
Style "FvwmPagerPager" NoTitle, NoHandles, Sticky, WindowListSkip, CirculateSkip
DestroyModuleConfig FvwmPagerPager: *
*FvwmPagerPager: UseSkipList
*FvwmPagerPager: Colorset * 2
*FvwmPagerPager: HilightColorset * 5
#*FvwmPagerPager: Fore midnightblue
*FvwmPagerPager: Font "xft:monospace:Bold:pixelsize=10;-adobe-helvetica-bold-r-*-*-12-*-*-*-*-*-*-*
#*FvwmPagerPager: Hilight lightgrey
*FvwmPagerPager: MiniIcons
*FvwmPagerPager: Balloons
*FvwmPagerPager: BalloonColorset * 3
*FvwmPagerPager: WindowColorsets 4 4
*FvwmPagerPager: BalloonFont "xft:monospace:Medium:pixelsize=10;-*-fixed-medium-r-*-*-12-*-*-*-*-*-*-*"
*FvwmPagerPager: Geometry 319x69+5000+5000
#WIN 1
#*FvwmPagerPager: WindowColors white grey51 white Blue4
#FVWM 1
#*FvwmPagerPager: WindowColors white grey51 white SlateBlue
*FvwmPagerPager: Label 0 Main
*FvwmPagerPager: Label 1 Internet
*FvwmPagerPager: Label 2 Games
*FvwmPagerPager: Label 3 Work
*FvwmPagerPager: SmallFont "xft:sans-serif:Medium:pixelsize=8;-*-fixed-medium-r-*-*-10-*-*-*-*-*-*-*"
And now this pager won’t start. I just see an empty box inside ButtonBar. Colorsets 2 and 5 are unchanged from my previous post.
Sorry I’m struggling so much with this. I wrote these configs over a decade ago 
BTW: since I have picom running, is there a way to have real transparency here? I’ve seen a few posts on the forum that suggest it (like this one: Picom - compositor for Xorg), but I don’t know what I’d need to do with my config here to use it.