diff --git a/internal/theme/theme.go b/internal/theme/theme.go
new file mode 100644
index 0000000..712b75e
--- /dev/null
+++ b/internal/theme/theme.go
@@ -0,0 +1,40 @@
+// Package theme is the Catppuccin palette used by lazyntfy.
+// Dark terminals get Mocha and light terminals get Latte, so the chrome
+// matches a Catppuccin terminal theme.
+package theme
+
+import (
+	"image/color"
+
+	"charm.land/lipgloss/v2"
+	"charm.land/lipgloss/v2/compat"
+)
+
+func pair(dark, light string) color.Color {
+	return compat.AdaptiveColor{Dark: lipgloss.Color(dark), Light: lipgloss.Color(light)}
+}
+
+var (
+	// Mocha / Latte.
+	mauve   = pair("#cba6f7", "#8839ef")
+	red     = pair("#f38ba8", "#d20f39")
+	yellow  = pair("#f9e2af", "#df8e1d")
+	green   = pair("#a6e3a1", "#40a02b")
+	text    = pair("#cdd6f4", "#4c4f69")
+	overlay = pair("#6c7086", "#9ca0b0")
+	surface = pair("#313244", "#ccd0da")
+	base    = pair("#1e1e2e", "#eff1f5")
+	crust   = pair("#11111b", "#dce0e8")
+
+	Title    = lipgloss.NewStyle().Bold(true).Foreground(mauve)
+	Accent   = lipgloss.NewStyle().Foreground(mauve)
+	Text     = lipgloss.NewStyle().Foreground(text)
+	Dim      = lipgloss.NewStyle().Foreground(overlay)
+	OK       = lipgloss.NewStyle().Foreground(green)
+	Warn     = lipgloss.NewStyle().Foreground(yellow)
+	Bad      = lipgloss.NewStyle().Bold(true).Foreground(red)
+	Badge    = lipgloss.NewStyle().Bold(true).Foreground(crust).Background(mauve)
+	Key      = lipgloss.NewStyle().Bold(true).Foreground(mauve).Background(surface)
+	Filter   = lipgloss.NewStyle().Foreground(crust).Background(yellow)
+	Selected = lipgloss.NewStyle().Bold(true).Foreground(base).Background(mauve)
+)