diff --git a/highlighters/main/main-highlighter.zsh b/highlighters/main/main-highlighter.zsh
index 8881dfa..59e54ff 100644
--- a/highlighters/main/main-highlighter.zsh
+++ b/highlighters/main/main-highlighter.zsh
@@ -374,6 +374,9 @@ _zsh_highlight_highlighter_main_paint()
     'chronic' :ev
     'ifne' :n
 
+    # grc - a "generic colouriser" (that's their spelling, not mine)
+    'grc' :se
+
   )
   # Commands that would need to skip one positional argument:
   #    flock