classic.js

@@ -280,12 +280,7 @@
       });
     }
     const seen = new Set();
-    return out.filter(c => {
-      const key = `${c.image || ''}|${c.hex}`;
-      if (seen.has(key)) return false;
-      seen.add(key);
-      return true;
-    });
+    return out.filter(c => (seen.has(c.hex) ? false : (seen.add(c.hex), true)));
   }
 
   // -------- tiny grid engine (Mithril) ----------