diff --git a/confluent_server/confluent/consoleserver.py b/confluent_server/confluent/consoleserver.py
index ce397d1a..34f7cd4a 100644
--- a/confluent_server/confluent/consoleserver.py
+++ b/confluent_server/confluent/consoleserver.py
@@ -108,10 +108,10 @@ def pytechars2line(chars, maxlen=None):
         char = chars[charidx]
         csi = bytearray([])
         if char.fg != lfg:
-            csi.append(30 + pytecolors2ansi[char.fg])
+            csi.append(30 + pytecolors2ansi.get(char.fg, 9))
             lfg = char.fg
         if char.bg != lbg:
-            csi.append(40 + pytecolors2ansi[char.bg])
+            csi.append(40 + pytecolors2ansi.get(char.bg, 9))
             lbg = char.bg
         if char.bold != lb:
             lb = char.bold