Breaking up example into smaller widgets

Signed-off-by: Hans Kokx <hans.d.kokx@gmail.com>

example/lib/config.dart

@@ -1,3 +1,5 @@
+import "package:flutter/material.dart";
+
 enum Feature {
   logging(true),
   authentication(true),
@@ -6,3 +8,14 @@ enum Feature {
   final bool enabledAtStartup;
   const Feature(this.enabledAtStartup);
 }
+
+// Some colors we'll use for our example
+const List<MaterialColor> colors = [
+  Colors.red,
+  Colors.orange,
+  Colors.yellow,
+  Colors.green,
+  Colors.blue,
+  Colors.purple,
+  Colors.deepPurple,
+];