Description
From #2656
Unlike #2656, the final approach I am going to suggest for this is to change selection-foreground to a tagged union in Zig and take some additional types. As part of this, I also propose removing selection-invert-fg-bg (cc @gpanders) and making it part of that union. Proposal:
# default
selection-foreground = window-background
# discussion 2656
selection-foreground = cell-foreground
# explicit color
selection-foreground = ABC123
# replacing selection-invert-fg-bg
selection-foreground = cell-background
selection-background = cell-foreground