diff --git a/src/theme/Adwaita.css b/src/theme/Adwaita.css
index d91f03d9..7090d83e 100644
--- a/src/theme/Adwaita.css
+++ b/src/theme/Adwaita.css
@@ -280,7 +280,7 @@ datechooser day:selected:hover {
 label.month-name {
     font-size: 16pt;
     font-weight: bold;
-    color: alpha(@theme_selected_bg_color, 0.75);
+    color: @theme_selected_bg_color;
     padding: 12px;
 }
 
@@ -305,11 +305,7 @@ label.month-name {
 }
 
 .week-header.lines {
-    color: alpha(@theme_fg_color, 0.4);
-}
-
-.week-header .margin {
-    color: alpha(@theme_fg_color, 0.6);
+    color: alpha(@window_fg_color, 0.15);
 }
 
 weekhourbar > label {
@@ -318,7 +314,7 @@ weekhourbar > label {
 }
 
 .week-view .lines {
-    color: alpha(@window_fg_color, 0.30);
+    color: alpha(@window_fg_color, 0.15);
 }
 
 weekgrid > widget.now-strip {