Weechat config using an "accent" color for important UI elements which can quickly be changed (e.g. to switch between light and dark terminal color scheme):
/color alias 22 accent
/set buflist.format.buffer_current "${color:,accent}${format_buffer}"
/set weechat.bar.status.color_bg accent
/set weechat.bar.title.color_bg accent
/set weechat.color.separator accent