Every theme is the same token set with different values, so the layout, the hairlines and the square corners never change — only the palette does. Amber stays ISK, cyan stays actions, red stays critical, teal stays ok.
Follow the operating system Light OS gets Catppuccin Latte, dark OS gets Gunmetal. Picking any theme below overrides this. Recommended
Gunmetal Default. The brand identity — amber on gunmetal. Catppuccin Latte Replaces the old light mode. Yellow, sky and teal darkened so ISK and actions stay readable on white. Catppuccin Mocha Closest contrast match to Gunmetal of the popular dark themes. Tokyo Night Nearest to Gunmetal: cool and dark, amber stays legible. Gruvbox Dark Warm counterpart. Strong contrast on long tables.
Also available
Dracula No true amber — orange serves as the ISK colour. Nord Low contrast; the panel layers sit close together. Rosé Pine Pine reads too dark as teal, so teal is lifted to #5cb8a0. Everforest Dark Muted and warm, low separation between panel layers. Solarized Dark Yellow lifted from #b58900. Lowest-contrast theme here; cyan sits under 4.5:1. Amber CRT Monochrome. Breaks the amber=ISK / cyan=action rule — everything is amber. Hiddenden House palette. Warm near-black; red is the softest accent at 4.2:1 on panel. Hiddenden Light House palette on paper. ISK is deliberately darker than the dark twin and still reaches only 4.1:1. Back Bar House palette. Neutral and cool, the deepest black of the set. Ayu Mirage Strongest accent contrast of the cool darks. Captions are the soft spot at 3.4:1. Kanagawa Wave Red is the weak point at 2.8:1 on panel, as it is in the original. Melange Dark Muted and warm, close to Everforest. Captions sit low at 2.8:1. Selenized Dark Teal base. Low separation throughout — red 3.1:1, captions 2.7:1. Flexoki Dark Actions are blue rather than cyan — Flexoki's cyan and teal are the same family. Vesper Near-monochrome, highest contrast here. Vesper ships one accent, so ok is derived and not canonical. Flexoki Light Paper white. ISK sits at 3.1:1 and the surface layers are only a few units apart. Gruvbox Light ISK is darker than the dark twin on purpose and still only 3.0:1 on panel. Everforest Light Lowest contrast of the set. Yellow lifted from #dfa000, but every accent stays under 3.5:1 on panel.