diff --git a/pyjecteur/common.py b/pyjecteur/common.py
index 8c93849..6f92128 100644
--- a/pyjecteur/common.py
+++ b/pyjecteur/common.py
@@ -55,8 +55,8 @@ class Filling(Enum):
 
 def widen(colors: List[Color], width: int):
     L = []
-    map(L.extend, [[e] * width for e in colors])
-    return L
+    return map(L.extend, [[e] * width for e in colors])
+
 
 def blendLedBar_simple(colors: List[Color], 
                 length: int,
@@ -83,9 +83,6 @@ def blendLedBar_simple(colors: List[Color],
 
         gap = length - total_len * factor
 
-        # TODO: Add GREATEST
-        # The idea is to first add a repetition to the already longest
-        # repetition to hurt the color ratio as little as possible
         if gap == 0:
             return reduplicate(deduped, rep_nb)
         # If there is still