Mob's default theme collection — one style package, five looks (extracted from mob core in Wave 4; light/dark/adaptive remain core's neutral baseline):

• MobThemes.Obsidian — deep violet dark (the package default)
• MobThemes.ObsidianGlass — obsidian with translucent depth
• MobThemes.Citrus — warm charcoal, lime accent
• MobThemes.Birch — light, paper-warm
• MobThemes.Material3 — Material You baseline palette (tokens only; pixel-perfect M3 needs the native-override style tier, not yet built)

As the app default (the styles lane)

# mob.exs
config :mob, :styles, [:mob_themes]
config :mob, :default_style, :mob_themes

Boot applies the package default (Obsidian). Switch at runtime to any of the five:

Mob.Theme.set(MobThemes.Citrus)
Mob.Theme.set({MobThemes.Birch, primary: :emerald_500})