error if not matches for nearest color

image_list.py

@@ -409,6 +409,8 @@ def find_color_nearest(opts):
             return
         for f in fs:
             hits.append((f,hit[1],hit[2],hit[3],hit[4]))
+    if len(hits)==0:
+        print("0 hits! You may have metadata of nonexisting files!, run with -D to erase")
 
     file_len=str(max([len(x[0]) for x in hits]))
     for h in range(len(hits)):