Themes

logana ships with 22 bundled themes and supports fully custom themes via JSON files.

Switching Themes

:set-theme catppuccin-mocha

Tab completes theme names. To set the default, add it to ~/.config/logana/config.json:

{ "theme": "catppuccin-mocha" }

Bundled Themes

Dark

Name	Description
`atomic`	Vibrant, high-saturation
`catppuccin-macchiato`	Pastel purple, slightly lighter than mocha
`catppuccin-mocha`	Pastel purple, the most popular Catppuccin variant
`dracula`	Purple, default theme
`everforest-dark`	Earthy green, easy on the eyes
`github-dark`	GitHub dark — deep navy with blue accents
`github-dark-dimmed`	GitHub dark dimmed — softer navy variant
`gruvbox-dark`	Warm retro browns and yellows
`jandedobbeleer`	Colorful, high contrast
`kanagawa`	Japanese ink — deep blues and warm golds
`monokai`	Classic dark with vivid accents
`nord`	Cool blue-grey Arctic palette
`onedark`	Atom-inspired, muted cool colors
`paradox`	High contrast
`rose-pine`	Muted roses and purples
`solarized`	Classic muted palette
`tokyonight`	Deep blue, inspired by Tokyo at night

Light

Name	Description
`catppuccin-latte`	Pastel, warm cream background
`everforest-light`	Earthy green, warm paper background
`github-light`	GitHub light — clean white with blue accents
`onelight`	Atom-inspired, clean white background
`rose-pine-dawn`	Warm rose tones on a parchment background

Custom Themes

Place .json files in ~/.config/logana/themes/. A user theme with the same name as a bundled one takes priority.

Minimal example

Only five fields are required — everything else falls back to built-in defaults:

{
  "root_bg":    "#1e1e2e",
  "border":     "#6272a4",
  "border_title": "#f8f8f2",
  "text":       "#f8f8f2",
  "error_fg":   "#ff5555",
  "warning_fg": "#f1fa8c",
  "process_colors": ["#ff5555", "#50fa7b", "#ffb86c", "#bd93f9", "#ff79c6", "#8be9fd"]
}

Full example (Dracula)

{
  "root_bg":          "#282a36",
  "border":           "#6272a4",
  "cursor_bg":        "#6272a4",
  "border_title":     "#f8f8f2",
  "text":             "#f8f8f2",
  "text_highlight_fg": "#ffb86c",
  "text_highlight_bg": "#7a4a10",
  "cursor_fg":        "#1c1c1c",
  "trace_fg":         "#6272a4",
  "debug_fg":         "#8be9fd",
  "notice_fg":        "#f8f8f2",
  "warning_fg":       "#f1fa8c",
  "error_fg":         "#ff5555",
  "fatal_fg":         "#ff5555",
  "search_fg":        "#1c1c1c",
  "visual_select_bg": "#44475a",
  "visual_select_fg": "#f8f8f2",
  "mark_bg":          "#463c0f",
  "mark_fg":          "#f8f8f2",
  "process_colors":   ["#ff5555", "#50fa7b", "#ffb86c", "#bd93f9", "#ff79c6", "#8be9fd"],
  "value_colors": {
    "http_get":    "#50fa7b",
    "http_post":   "#8be9fd",
    "http_put":    "#ffb86c",
    "http_delete": "#ff5555",
    "http_patch":  "#bd93f9",
    "http_other":  "#6272a4",
    "status_2xx":  "#50fa7b",
    "status_3xx":  "#8be9fd",
    "status_4xx":  "#ffb86c",
    "status_5xx":  "#ff5555",
    "ip_address":  "#bd93f9",
    "uuid":        "#6c71c4"
  }
}

Color Formats

All color values accept:

Hex string: "#RRGGBB"
RGB array: [r, g, b] (each 0–255)

Fields Reference

Required

Field	Used for
`root_bg`	Main background
`border`	Panel border lines and dimmed decorator text
`border_title`	Panel title text
`text`	Default log line text
`error_fg`	ERROR level lines
`warning_fg`	WARN/WARNING level lines
`process_colors`	Array of colors cycled across process/logger name columns (can be toggled via `:value-colors`)

Optional (with defaults)

Field	Default	Used for
`cursor_bg`	= `border`	Background of the cursor line, command bar, and search bar
`text_highlight_fg`	`#ffb86c`	Search match background; also the cursor for the current match
`text_highlight_bg`	`#7a4a10`	Background behind search highlight
`cursor_fg`	`#1c1c1c`	Text color on the cursor line (sits on `cursor_bg`)
`trace_fg`	`#6272a4`	TRACE level lines
`debug_fg`	`#8be9fd`	DEBUG level lines
`info_fg`	= `text`	INFO level lines (disabled by default; enable via `:level-colors`)
`notice_fg`	`#f8f8f2`	NOTICE level lines
`fatal_fg`	`#ff5555`	FATAL/CRITICAL level lines
`search_fg`	`#1c1c1c`	Foreground of search match highlights
`visual_select_bg`	`#44475a`	Visual line selection background
`visual_select_fg`	`#f8f8f2`	Visual line selection foreground
`mark_bg`	`#463c0f`	Marked line background
`mark_fg`	`#f8f8f2`	Marked line foreground
`value_colors`	see below	Per-token HTTP/IP/UUID colors

value_colors sub-object

All fields are optional and fall back to Dracula-palette defaults.

Field	Default	Token type
`http_get`	`#50fa7b`	GET
`http_post`	`#8be9fd`	POST
`http_put`	`#ffb86c`	PUT
`http_delete`	`#ff5555`	DELETE
`http_patch`	`#bd93f9`	PATCH
`http_other`	`#6272a4`	HEAD, OPTIONS, and others
`status_2xx`	`#50fa7b`	2xx success codes
`status_3xx`	`#8be9fd`	3xx redirect codes
`status_4xx`	`#ffb86c`	4xx client error codes
`status_5xx`	`#ff5555`	5xx server error codes
`ip_address`	`#bd93f9`	IPv4 and IPv6 addresses
`uuid`	`#6c71c4`	UUID strings

Toggling token and level colors at runtime

Use :value-colors to open an interactive dialog where you can enable or disable individual token types — including Process / logger colors — without editing the theme file.

Use :level-colors to open a similar dialog for log levels. Each level (TRACE, DEBUG, NOTICE, WARNING, ERROR, FATAL) can be toggled independently. The choices are saved per-file across sessions.

Set cursor_bg to a color that is noticeably darker than root_bg so the cursor line and command bar are clearly visible. Keep border as a subtle separator — it can be close to root_bg if you prefer minimal panel borders.

Set cursor_fg and search_fg to a dark color — they appear as text on the cursor_bg background and must contrast against it.

{
  "root_bg":   "#fafafa",
  "border":    "#d0d0d0",
  "cursor_bg": "#aaaaaa",
  "cursor_fg": "#383a42",
  "search_fg": "#383a42"
}

Keyboard shortcuts

logana