✨ Show substitutions on the timetable

src/util.js

@@ -24,3 +24,13 @@ export function getSubstitutionText(substitution) {
   }
   return text;
 }
+
+export function getSubstitutionColor(substitution) {
+  if (!substitution) return;
+  switch (substitution.type) {
+    case "change":
+      return "background-color: #14587e;";
+    case "cancellation":
+      return "background-color: #7d2b2d;";
+  }
+}