diff --git a/themes/slate-es-de/plus4/colors.xml b/themes/slate-es-de/plus4/colors.xml
index 3556b8849..9b5e7a574 100644
--- a/themes/slate-es-de/plus4/colors.xml
+++ b/themes/slate-es-de/plus4/colors.xml
@@ -4,13 +4,13 @@
             <color>002684</color>
         </image>
         <image name="band2">
-            <color>f20029</color>
+            <color>F20029</color>
         </image>
         <image name="band3">
-            <color>36a346</color>
+            <color>36A346</color>
         </image>
         <image name="band4">
-            <color>f8b621</color>
+            <color>F8B621</color>
         </image>
     </view>
 </theme>
\ No newline at end of file