diff --git a/mode/c.py b/mode/c.py
index c4023a7..1f52519 100644
--- a/mode/c.py
+++ b/mode/c.py
@@ -177,11 +177,11 @@ hi_magenta = ('magenta505', 'default')
 lo_red = ('red300', 'default')
 hi_red = ('red511', 'default')
 
-# orange are for arrays and hashes
+# orange is for macro definitions, headers and constants
 hi_orange = ('yellow531', 'default')
 lo_orange = ('yellow520', 'default')
 
-# yellow is for scalars and prototypes
+# yellow is for parts of macros
 hi_yellow = ('yellow551', 'default')
 lo_yellow = ('yellow330', 'default')
 
@@ -189,11 +189,11 @@ lo_yellow = ('yellow330', 'default')
 lo_green = ('green030', 'default')
 hi_green = ('green050', 'default')
 
-# cyan is for quotes, evals, regexes, subs
+# cyan is for types
 lo_cyan = ('cyan033', 'default')
 hi_cyan = ('cyan155', 'default')
 
-# blue is unused
+# blue is definitions, functions and some macros
 lo_blue = ('blue113', 'default')
 hi_blue = ('blue225', 'default')