So you can override the colors and still have the text attributes
# Default colors and attributes
fzf
export FZF_DEFAULT_OPTS='--color hl👎underline,hl+👎underline:reverse'
# Default colors with underline+reverse attributes
fzf
# Different colors with underline+reverse attributes
fzf --color hl:176,hl+:177
Related: https://github.com/junegunn/fzf.vim/issues/1197#issuecomment-739804363