diff --git a/teckidscal.sty b/teckidscal.sty
index 2e1c4c6b4a331fde6a6e198599feb64aa272892b..ffa3c693dc350321bc9b64bff9be4e800b84c12c 100644
--- a/teckidscal.sty
+++ b/teckidscal.sty
@@ -66,7 +66,8 @@
 \definecolor{teckidscal3}{HTML}{00CBFA}%
 \definecolor{teckidscal4}{HTML}{00CC00}%
 \definecolor{teckidscal5}{HTML}{D12A00}%
-\definecolor{teckidscalKW}{HTML}{999999}%
+\definecolor{teckidscalKW}{HTML}{FFBF00}%
+\definecolor{teckidscalNO}{HTML}{999999}%
 \expandafter\def\csname teckidscalcolour0\endcsname{regulärer Wochentag}%
 \expandafter\def\csname teckidscalcolour1\endcsname{Wochenende / \textbf{Feiertag*}}%
 \expandafter\def\csname teckidscalcolour2\endcsname{Veranstaltung}%
@@ -407,13 +408,13 @@
   \fi%
   \ifnum\@tempcntb=\tktmM\else%
    \ifnum\count@<29%
-    \csname tkCalLine29\endcsname=\expandafter{\the\csname tkCalLine29\endcsname \tkCalColsep\tkCalColsep\tkCalColsep}%
+    \csname tkCalLine29\endcsname=\expandafter{\the\csname tkCalLine29\endcsname \tkCalColsep\cellcolor{teckidscalNO}\tkCalColsep\cellcolor{teckidscalNO}\tkCalColsep\cellcolor{teckidscalNO}}%
    \fi
    \ifnum\count@<30%
-    \csname tkCalLine30\endcsname=\expandafter{\the\csname tkCalLine30\endcsname \tkCalColsep\tkCalColsep\tkCalColsep}%
+    \csname tkCalLine30\endcsname=\expandafter{\the\csname tkCalLine30\endcsname \tkCalColsep\cellcolor{teckidscalNO}\tkCalColsep\cellcolor{teckidscalNO}\tkCalColsep\cellcolor{teckidscalNO}}%
    \fi
    \ifnum\count@<31%
-    \csname tkCalLine31\endcsname=\expandafter{\the\csname tkCalLine31\endcsname \tkCalColsep\tkCalColsep\tkCalColsep}%
+    \csname tkCalLine31\endcsname=\expandafter{\the\csname tkCalLine31\endcsname \tkCalColsep\cellcolor{teckidscalNO}\tkCalColsep\cellcolor{teckidscalNO}\tkCalColsep\cellcolor{teckidscalNO}}%
    \fi
    \tkCalToks={}%
    \ifnum\@tempcntb=\z@\else%