iTerm (Minimal Theme): Change Tab Height

iTerm’s minimal theme is great, but the tab bar takes up far too much vertical space:

This is especially an issue when using the Retina scaling on a 4k display, where the effective screen resolution is only 1920x1080. Happily, iTerm has an Advanced setting to modify this, in Preferences → Advanced:

Using a tab height of 30 makes the minimal theme much nicer, imo.