[minor] Unused variable

tests/scenarii.rs

@@ -694,13 +694,13 @@ async fn get_or_insert_calendar(source: &mut Cache, url: &Url)
         None => {
             let new_name = format!("Test calendar for URL {}", url);
             let supported_components = SupportedComponents::TODO;
-            let color = csscolorparser::parse("#ff8000"); // TODO: we should rather have specific colors, depending on the calendars
+            let color = csscolorparser::parse("#ff8000").unwrap(); // TODO: we should rather have specific colors, depending on the calendars
 
             source.create_calendar(
                 url.clone(),
                 new_name.to_string(),
                 supported_components,
-                None,
+                Some(color),
             ).await
         }
     }