Themes

How Huh v2.0.3 themes are built, the full Styles field list, and the spinner's separate theme type.

Theme functions have the signature func(isDark bool) *huh.Styles. Huh asks the terminal for its background and calls the theme with the answer. Wrap custom and built in functions with huh.ThemeFunc, for example form.WithTheme(huh.ThemeFunc(huh.ThemeDracula)). Built in functions include ThemeCharm, ThemeDracula, ThemeCatppuccin, ThemeBase16, and ThemeBase. See the complete theme example:

// examples/charmed-huh/theme/main.go
func myTheme(isDark bool) *huh.Styles {
    s := huh.ThemeCharm(isDark)
    ld := lipgloss.LightDark(isDark)
    accent := ld(lipgloss.Color("#5A2D82"), lipgloss.Color("#C4A7F5"))
    s.Focused.Title = s.Focused.Title.Foreground(accent).Bold(true)
    s.Focused.SelectedOption = s.Focused.SelectedOption.Foreground(accent)
    s.Focused.FocusedButton = s.Focused.FocusedButton.Background(accent)
    return s
}

form.WithTheme(huh.ThemeFunc(myTheme))

Styles fields

Styles has Form, Group, FieldSeparator, Focused and Blurred, and Help. Focused and Blurred are FieldStyles: Base, Title, Description, ErrorIndicator, ErrorMessage, SelectSelector, Option, MultiSelectSelector, SelectedOption, SelectedPrefix, UnselectedOption, UnselectedPrefix, TextInput, FocusedButton, BlurredButton, Card, NoteTitle, Next, Directory, File.

Themes can be set per group or per field too.

Spinner themes

The spinner's WithTheme takes a spinner.Theme (for example spinner.ThemeFunc(spinner.ThemeDefault)), not a form theme.