termr_theme: Themes

In termr: Modern Reactive Terminal Applications with Data Workflows

Themes

Description

A theme gives names to colours. Use them in styles and stylesheets as "$name", e.g. style(background = "$primary"). Built-in widgets use theme colours, so a theme restyles a whole app: app(ui, theme = "dark") or app$theme <- termr_theme("light", accent = "purple").

Usage

termr_theme(base = "default", ..., name = base)

Arguments

base	Name of a built-in theme to start from.
...	Colours to set, e.g. primary = "#8a2be2".
name	Name of the theme.

Details

Named termr_theme() so that it does not mask ggplot2::theme().

Colour names: foreground, background (screen background), surface (headers, panels), muted (secondary text, guides, disabled widgets), primary and on_primary (primary buttons, cursors), accent (focus), success, warning, error, information, stripe (zebra rows). Extra names can be added.

Built-in themes: "default" (the terminal's own 16-colour palette), "dark" and "light" (24-bit colours) and "high-contrast" (black and white with saturated yellow / cyan highlights and a heavier border around the focused widget).

On a terminal without colour (NO_COLOR, TERM=dumb) selections and cursors are drawn in reverse video, errors in bold underline and secondary text dimmed, so nothing depends on colour alone.

Value

A termr_theme.

Examples

termr_theme("dark", accent = "orange")

termr documentation built on Oct. 21, 2026, 5:13 p.m.