cli: colorize output of "config list"

cli/src/commands/config.rs

@@ -226,6 +226,7 @@ pub(crate) fn cmd_config_list(
 
     ui.request_pager();
     let mut formatter = ui.stdout_formatter();
+    formatter.push_label("config_list")?;
     let name_path = args
         .name
         .as_ref()
@@ -251,6 +252,7 @@ pub(crate) fn cmd_config_list(
         template.format(&annotated, formatter.as_mut())?;
         wrote_values = true;
     }
+    formatter.pop_label()?;
     drop(formatter);
     if !wrote_values {
         // Note to stderr explaining why output is empty.

cli/src/config/colors.toml

@@ -59,6 +59,13 @@
 "working_copy placeholder" = "bright red"
 "working_copy description placeholder" = "yellow"
 "working_copy empty description placeholder" = "bright green"
+
+"config_list name" = "green"
+"config_list value" = "yellow"
+"config_list overridden" = "bright black"
+"config_list overridden name" = "bright black"
+"config_list overridden value" = "bright black"
+
 "diff header" = "yellow"
 "diff empty" = "cyan"
 "diff binary" = "cyan"
@@ -67,6 +74,7 @@
 "diff removed" = "red"
 "diff added" = "green"
 "diff modified" = "cyan"
+
 "op_log id" = "blue"
 "op_log user" = "yellow"
 "op_log time" = "cyan"

cli/src/config/templates.toml

@@ -25,11 +25,13 @@ separate(" ",
 '''
 
 config_list = '''
-concat(
-  if(overridden, "# "),
-  name,
-  "=",
-  value,
+label(if(overridden, "overridden"),
+  concat(
+    if(overridden, "# "),
+    name,
+    "=",
+    value,
+  ),
 ) ++ "\n"
 '''
 

cli/tests/test_config_command.rs

@@ -254,6 +254,21 @@ fn test_config_layer_override_default() {
     # merge-tools.vimdiff.program="repo"
     merge-tools.vimdiff.program="command-arg"
     "###);
+
+    let stdout = test_env.jj_cmd_success(
+        &repo_path,
+        &[
+            "config",
+            "list",
+            "--color=always",
+            config_key,
+            "--include-overridden",
+        ],
+    );
+    insta::assert_snapshot!(stdout, @r###"
+    # merge-tools.vimdiff.program="user"
+    merge-tools.vimdiff.program="repo"
+    "###);
 }
 
 #[test]