Refocus app around identity proof flows

Sources/App/IDPGlobalApp.swift

@@ -7,7 +7,7 @@ struct IDPGlobalApp: App {
     var body: some Scene {
         WindowGroup {
             RootView(model: model)
-                .tint(Color(red: 0.12, green: 0.40, blue: 0.31))
+                .tint(AppTheme.accent)
                 .task {
                     await model.bootstrap()
                 }
@@ -47,17 +47,8 @@ private struct RootView: View {
                 HomeRootView(model: model)
             }
         }
-        .background(
-            LinearGradient(
-                colors: [
-                    Color(red: 0.96, green: 0.97, blue: 0.94),
-                    Color(red: 0.89, green: 0.94, blue: 0.92),
-                    Color(red: 0.94, green: 0.91, blue: 0.84)
-                ],
-                startPoint: .topLeading,
-                endPoint: .bottomTrailing
-            )
-            .ignoresSafeArea()
-        )
+        .background {
+            AppBackground()
+        }
     }
 }