More cleanup for new theme

+ Clippy + fmt

src/messages/mod.rs

@@ -62,6 +62,20 @@ fn role_color() -> TeraFnRet {
     )
 }
 
+fn seer_color() -> TeraFnRet {
+    Box::new(
+        move |args: &HashMap<String, Value>| -> tera::Result<Value> {
+            match args.get("role") {
+                Some(val) => match tera::from_value::<Role>(val.clone()) {
+                    Ok(v) => Ok(tera::to_value(v.seer_color().to_string()).unwrap()),
+                    Err(_) => Err("Failed to parse value as role".into()),
+                },
+                None => Err("Missing parameter".into()),
+            }
+        },
+    )
+}
+
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct DiscordUser {
     pub(crate) display_name: String,
@@ -188,6 +202,7 @@ impl TryFrom<MessageConfig> for MessageTemplates {
         templates.register_function("to_local_time", time_to_discord_time("f"));
         templates.register_function("player_color", role_color());
         templates.register_function("player_role", role_name());
+        templates.register_function("seer_color", seer_color());
 
         templates.add_raw_template("welcome_message", &config.welcome_message)?;
         templates.add_raw_template("status_message", &config.status_message)?;