Index: tools/voice.pl
===================================================================
--- tools/voice.pl	(revision 18268)
+++ tools/voice.pl	(working copy)
@@ -225,6 +225,15 @@
                 }
             }
         }
+        case "japanese" {
+            switch($$tts_object{"name"}) {
+                case "(unknown)" {
+                    $string =~ s/大文字/おー文字/;
+                    $string =~ s/背景色/背景蜀/;
+                    $string =~ s/文字色/文字蜀/;
+                }
+            }
+        }
     }
     if ($orig ne $string) {
         printf("%s -> %s\n", $orig, $string) if $verbose;