This was the configuration I used for tint2 when I was trying to
replicate a taskbar-like experience in bspwm. Although it worked to some
extent, the dash-to-panel extension for GNOME handles this much nicer,
and with the many other benefits GNOME provides.
For history's sake, I'm including how I changed the color scheme of
tint2 with wal. Note that I don't use tint2 anymore since I realized
that what I was trying to do with tint2 can already be achieved much
easier and much more polished with GNOME extensions.