Optional command color

src/color.rs

@@ -1,3 +1,4 @@
+use ansi_term::Colour;
 use {
   super::*,
   ansi_term::{ANSIGenericString, Color::*, Prefix, Style, Suffix},
@@ -76,8 +77,13 @@ impl Color {
     self.restyle(Style::new().fg(Cyan).bold())
   }
 
-  pub(crate) fn command(self) -> Self {
-    self.restyle(Style::new().bold())
+  pub(crate) fn command(self, foreground_color: Option<Colour>) -> Self {
+    let new_style = Style {
+      foreground: foreground_color,
+      is_bold: true,
+      ..Style::default()
+    };
+    self.restyle(new_style)
   }
 
   pub(crate) fn parameter(self) -> Self {

src/config.rs

@@ -1,3 +1,4 @@
+use ansi_term::Colour;
 use {
   super::*,
   clap::{App, AppSettings, Arg, ArgGroup, ArgMatches, ArgSettings},
@@ -15,6 +16,7 @@ pub(crate) const CHOOSE_HELP: &str = "Select one or more recipes to run using a
 pub(crate) struct Config {
   pub(crate) check: bool,
   pub(crate) color: Color,
+  pub(crate) command_color: Option<Colour>,
   pub(crate) dotenv_filename: Option<String>,
   pub(crate) dotenv_path: Option<PathBuf>,
   pub(crate) dry_run: bool,
@@ -85,6 +87,7 @@ mod arg {
   pub(crate) const CHOOSER: &str = "CHOOSER";
   pub(crate) const CLEAR_SHELL_ARGS: &str = "CLEAR-SHELL-ARGS";
   pub(crate) const COLOR: &str = "COLOR";
+  pub(crate) const COMMAND_COLOR: &str = "COMMAND-COLOR";
   pub(crate) const DOTENV_FILENAME: &str = "DOTENV-FILENAME";
   pub(crate) const DOTENV_PATH: &str = "DOTENV-PATH";
   pub(crate) const DRY_RUN: &str = "DRY-RUN";
@@ -110,6 +113,12 @@ mod arg {
   pub(crate) const COLOR_NEVER: &str = "never";
   pub(crate) const COLOR_VALUES: &[&str] = &[COLOR_AUTO, COLOR_ALWAYS, COLOR_NEVER];
 
+  pub(crate) const COMMAND_COLOR_CYAN: &str = "cyan";
+  pub(crate) const COMMAND_COLOR_PURPLE: &str = "purple";
+  pub(crate) const COMMAND_COLOR_NONE: &str = "none";
+  pub(crate) const COMMAND_COLOR_VALUES: &[&str] =
+    &[COMMAND_COLOR_NONE, COMMAND_COLOR_CYAN, COMMAND_COLOR_PURPLE];
+
   pub(crate) const DUMP_FORMAT_JSON: &str = "json";
   pub(crate) const DUMP_FORMAT_JUST: &str = "just";
   pub(crate) const DUMP_FORMAT_VALUES: &[&str] = &[DUMP_FORMAT_JUST, DUMP_FORMAT_JSON];
@@ -142,6 +151,14 @@ impl Config {
           .default_value(arg::COLOR_AUTO)
           .help("Print colorful output"),
       )
+      .arg(
+        Arg::with_name(arg::COMMAND_COLOR)
+          .long("command-color")
+          .takes_value(true)
+          .possible_values(arg::COMMAND_COLOR_VALUES)
+          .default_value(arg::COMMAND_COLOR_NONE)
+          .help("Color to use when echoing recipe lines"),
+      )
       .arg(
         Arg::with_name(arg::DRY_RUN)
           .short("n")
@@ -396,6 +413,23 @@ impl Config {
     }
   }
 
+  fn command_color_from_matches(matches: &ArgMatches) -> ConfigResult<Option<Colour>> {
+    let value = matches
+      .value_of(arg::COMMAND_COLOR)
+      .ok_or_else(|| ConfigError::Internal {
+        message: "`--command-color` had no value".to_string(),
+      })?;
+
+    match value {
+      arg::COMMAND_COLOR_NONE => Ok(None),
+      arg::COMMAND_COLOR_CYAN => Ok(Some(Colour::Cyan)),
+      arg::COMMAND_COLOR_PURPLE => Ok(Some(Colour::Purple)),
+      _ => Err(ConfigError::Internal {
+        message: format!("Invalid argument `{value}` to --command-color."),
+      }),
+    }
+  }
+
   fn dump_format_from_matches(matches: &ArgMatches) -> ConfigResult<DumpFormat> {
     let value = matches
       .value_of(arg::DUMP_FORMAT)
@@ -422,6 +456,7 @@ impl Config {
     };
 
     let color = Self::color_from_matches(matches)?;
+    let command_color = Self::command_color_from_matches(matches)?;
 
     let set_count = matches.occurrences_of(arg::SET);
     let mut overrides = BTreeMap::new();
@@ -588,6 +623,7 @@ impl Config {
         .unwrap_or("    ")
         .to_owned(),
       color,
+      command_color,
       invocation_directory,
       search_config,
       shell_args,

src/recipe.rs

@@ -182,7 +182,7 @@ impl<'src, D> Recipe<'src, D> {
         || !((quiet_command ^ self.quiet) || config.verbosity.quiet())
       {
         let color = if config.highlight {
-          config.color.command()
+          config.color.command(config.command_color)
         } else {
           config.color
         };

tests/command.rs

@@ -31,7 +31,7 @@ test! {
     error: The argument '--command <COMMAND>' requires a value but none was supplied
 
     USAGE:
-        just{EXE_SUFFIX} --color <COLOR> --dump-format <FORMAT> --shell <SHELL> \
+        just{EXE_SUFFIX} --color <COLOR> --command-color <COMMAND-COLOR> --dump-format <FORMAT> --shell <SHELL> \
         <--changelog|--choose|--command <COMMAND>|--completions <SHELL>|--dump|--edit|\
         --evaluate|--fmt|--init|--list|--show <RECIPE>|--summary|--variables>