I really like the extension because it uses an image and not just solid colors (there is nothing wrong with solid colors themes but I think this is a neat little detail)
Only issue I have with it is that tab names have a white glow effect, which makes them harder to read when not on them, at least in my experience

thank u for ur service goat

the red text on window titles appears to have a white shadow, which IMO is pretty ugly. everything else is on point.