diff --git a/app/views/themes.yml b/app/views/themes.yml
new file mode 100644
index 0000000..688f9e4
--- /dev/null
+++ b/app/views/themes.yml
@@ -0,0 +1,22 @@
+# Seasonal themes for Haldis
+- lightmode:
+        file: lightmode.css
+        type: default
+- darkmode:
+        file: darkmode.css
+        type: default
+- halloween:
+        file: halloween.css
+        type: static-date
+        start: 21/10
+        end: 10/11
+- sinterklaas:
+        file: sinterklaas.css
+        type: static-date
+        start: 28/11
+        end: 16/12
+- kerstmis:
+        file: kerstmis.css
+        type: static-date
+        start: 15/12
+        end: 31/12
\ No newline at end of file